CREST Dive Computer Warranty & After-Sales Service
Updated October 28, 2026 | Version 3.0
Thank you for choosing a CREST dive computer.
To provide clear and consistent after-sales information, this page explains CREST's current product warranty, after-sales service, and the terms applicable to promotional and welfare products. Please read it carefully before purchasing or using a product.
By placing an order and completing payment, you acknowledge that you have read, understood, and agreed to the purchase terms and after-sales service provisions stated on the relevant product page, promotion page, or this page.
1. Diving Safety and User Responsibility
Diving involves inherent risks. CREST dive computers are recreational diving support devices designed to help users record and interpret dive-related information. They do not replace proper dive training, dive planning, the buddy system, professional judgment, or personal responsibility for safety.
Before using this product, make sure that you have received appropriate and complete dive training and understand the operation of scuba equipment, diving safety practices, dive-planning principles, and the basic underwater operation of this product. Users must determine for themselves whether a dive is appropriate based on their training, certification level, actual experience, physical condition, and the conditions at the dive site.
Before every dive, confirm that the product is functioning properly, has sufficient battery power, and has been set to the appropriate dive mode and parameters.
Do not use this product beyond the maximum depth for which you have been trained. Do not use it in an unfamiliar, untrained, or otherwise unsuitable diving environment, even if the depth is within your certified limit. The information provided by this product is for reference only. Users must continue to follow the dive-safety rules, dive plans, and operating limits established by their training organization.
Important Warnings
1. Use this product only after receiving proper dive training and understanding the operation of scuba equipment and applicable diving safety practices. This product cannot replace professional training or instruction.
2. No decompression theory, algorithm, calculation, dive table, or dive computer—including this product—can completely eliminate the risk of decompression sickness or related diving injuries. Even when this product is used correctly and within a planned dive profile and operating limits, it cannot account for every individual physiological condition or change. We recommend consulting a qualified medical professional before participating in diving activities.
The only certain way to avoid diving injuries is not to dive.
3. This product is intended for recreational diving only. Do not exceed the maximum depth for which you have been trained, and do not use it in a diving environment for which you have not been trained. You are responsible for your own safety.
2. Seven-Day Inspection Period, Returns, Refunds, and Exchanges
In accordance with applicable Taiwan consumer-protection laws, products purchased through the CREST Diving Official Store are eligible for a seven-day inspection period after delivery.
The seven-day inspection period begins on the day after the product is delivered. The day shown as “delivered” by the carrier is not counted as Day 1; Day 1 is the following day, and the period runs for seven consecutive calendar days.
The inspection period is calculated in calendar days and includes weekends and public holidays. It is not limited to business days.
Please note that the inspection period is not a trial-use period. If you request a return, refund, or exchange, please keep the product, original packaging, accessories, gifts, and related documents complete and in proper condition, and follow CREST's Return, Refund & Exchange Policy.
Opening a product to carry out the inspection necessary to examine it does not, by itself, cause a consumer to lose the statutory right to cancel the contract. If handling beyond what is necessary for inspection damages the product or reduces its value, the matter will be handled in accordance with applicable law and the circumstances of the case.
For full return, refund, exchange, and application information, please visit: https://crestdiving.com/en/pages/refundandexchange
3. DOA (Dead on Arrival) Handling
If you discover a DOA (Dead on Arrival) issue immediately after receiving your product, such as:
• The product cannot be powered on;
• The product cannot be charged normally;
• The product cannot enter dive mode; or
• A system malfunction prevents normal operation,
please submit a request through the CREST Product Warranty Service Application System as soon as possible after delivery:
https://rma-helper-hub.lovable.app/
After verification, we will assist with a replacement or other necessary after-sales arrangement as soon as practicable.
4. Conditional Warranty Service
CREST provides conditional warranty service for the main body of CREST dive computers. This warranty is an additional, agreed after-sales service provided by CREST. It is intended for the assessment and handling of product functional issues that arise under normal use. In principle, this warranty service applies to products whose origin, purchase record, and warranty eligibility can be verified and that were lawfully sold through the CREST Diving Official Store, a CREST authorized agent, or a CREST authorized dealer.
If valid proof of purchase or a product warranty card is unavailable, CREST may use the product serial number and related records to help verify eligibility. If the product's origin, authenticity, or warranty eligibility still cannot be confirmed, this warranty service may not apply.
The warranty period begins on the consumer's actual purchase date and is determined under the warranty policy applicable at the time of purchase. To apply for warranty service, please provide valid proof of purchase, the product warranty card, the product serial number, a description of the issue, and any necessary photos or videos so that we can assess the product condition and warranty eligibility. You may still submit an application if some information is unavailable; CREST will assist with verification using the records it can obtain.
Warranty Period and Eligibility
1 When valid proof of purchase is available
If the consumer can provide valid proof of purchase, the actual purchase date is used as the start of the warranty period. The warranty period and eligibility are determined according to the purchase region, product model, and warranty policy applicable at the time of purchase.
Valid proof of purchase may include a uniform invoice, electronic invoice, official purchase receipt, order record, product warranty card, or other relevant purchase document.
The proof of purchase must contain all three of the following:
1. Purchase date: the date on which the consumer actually purchased the product can be confirmed.
2. Sales channel: the seller or purchase source can be identified.
3. Transaction details: the product purchased and the relevant transaction record can be confirmed.
All three items are required. A document missing any one of them cannot, by itself, serve as complete and valid proof of purchase. Whether a document qualifies will be assessed using its contents, the product serial number, and any other available relevant information.
2 When valid proof of purchase is unavailable
If the consumer cannot provide valid proof of purchase, CREST may use the product serial number to check the manufacturing batch and related sales records.
If the consumer's actual purchase date cannot be confirmed from the available information, the verified manufacturing date will be used as the start of the warranty period, and eligibility will be assessed under the applicable warranty policy.
If the applicant supplies other supporting information sufficient to establish the actual purchase date, CREST will consider it together with the other records. The manufacturing date will not be the sole basis for the determination.
3 Final determination of warranty eligibility
Actual warranty eligibility is determined by considering the product's origin, purchase information, serial number, available manufacturing batch and sales records, and the applicable warranty policy.
The start of the warranty period is determined according to items 1 and 2 above. If the available information is still insufficient to establish eligibility, CREST will assess and handle the case according to verifiable information and applicable rules.
Being within the warranty period and meeting the purchase requirements does not mean every fault or type of damage qualifies for free warranty service. Eligibility for free service remains subject to product inspection and the relevant warranty terms.
Common Warranty Eligibility Scenarios
The following examples explain how common purchase situations are assessed.
| Common situation | How CREST assesses warranty eligibility |
|---|---|
| 1 Valid proof of purchase and a verifiable product source | The warranty period and eligibility are determined from the actual purchase date and the applicable warranty policy. |
| 2 Proof of purchase or product warranty card has been lost | CREST may check the manufacturing batch and related sales records using the serial number. If the actual purchase date cannot be confirmed, the verified manufacturing date is used as the warranty start date and eligibility is assessed under the applicable policy. |
| 3 Genuine CREST product purchased through a nonauthorized channel | Assessed individually according to the product's origin, the terms of CREST's contractual warranty, and applicable rules. Authenticity alone does not guarantee coverage under CREST's warranty. |
| 4 Product origin is unknown and sales records cannot be confirmed | CREST may ask the consumer for additional purchase information. If eligibility still cannot be confirmed, CREST's contractual warranty service may not apply. |
| 5 Product confirmed to be counterfeit or forged | CREST's contractual warranty service does not apply. |
Notes:
1. These scenarios are guidance for assessing eligibility. The actual result depends on all relevant information and the applicable warranty policy.
2. Meeting the eligibility requirements and being within the warranty period does not mean every fault or type of damage qualifies for free service. Product inspection and the relevant terms still apply.
3. CREST's contractual warranty terms do not affect rights consumers have under applicable law.
The main body of a dive computer is covered by a one-year conditional warranty from the date of purchase. Dive computer accessories and gifts are not covered by this warranty. Warranty periods for promotional offers are subject to the applicable promotion notice.
If a product is confirmed to qualify for warranty service, CREST may provide a new product, a welfare product, or another appropriate replacement solution, depending on product condition, inventory availability, and the applicable service terms. A replacement product does not restart or extend the original warranty period.
If a product must be sent to CREST or an authorized service location for assessment, the customer is generally responsible for shipping costs to CREST or the authorized service location. Once the product is confirmed to qualify for warranty service, CREST generally bears the cost of sending the replacement product back to the customer. Local laws or the terms of a specific promotion may provide otherwise.
Warranty periods and service content may vary by product, sales region, promotion, special-offer product, or welfare product. Please refer to the relevant product page, promotion page, purchase notice, or applicable warranty information.
5. Updated Warranty Service Approach
To provide faster, clearer, and more consistent support, CREST now handles dive computer after-sales cases primarily through replacement solutions. We no longer offer repairs for original units or quotations for individual repair work.
If a product is confirmed to qualify for warranty service, CREST may provide a new product, a welfare product, or another appropriate replacement solution based on product condition, inventory availability, and the applicable service terms.
If a product is outside the warranty period or does not qualify for warranty service, CREST no longer offers repairs for the original unit or individual repair quotations. If you wish to continue using a CREST product, you may consider the new products, welfare products, or current promotions listed on the CREST website, based on the published prices and terms on the relevant product pages.
For warranty periods and eligibility, please refer to Section 4, Conditional Warranty Service, above.
For details of this policy update, warranty periods, and how the policy applies, please see the official announcement: CREST Dive Computer Warranty and Service Policy Update — https://crestdiving.com/en/blogs/crest-news/crest-warranty-repair-policy-update
6. Product Inspection and Fees for Warranty Service Applications
Before applying for CREST dive computer warranty service, please review Section 4, Conditional Warranty Service, for the applicable warranty period and conditions.
If you are unsure whether your product is still within its warranty period, you may submit an application through the official CREST Warranty Service Application System and follow its instructions for completing the online application and shipping the product.
After receiving the product, CREST will carry out the checks and tests needed for the case to determine the product's condition and the applicable warranty service.
Inspection fees are governed by the following principles:
1 Applications eligible for free warranty service
No product inspection fee is charged for an application confirmed to qualify for free warranty service.
2 Applications not eligible for free warranty service
If the product is outside the warranty period or the application is confirmed not to qualify for free warranty service, the standard inspection fee is NT$600 per unit, including tax.
If an unusual fault requires additional inspection time, staff, or other necessary testing, CREST may assess the circumstances and provide a separate quote for the additional inspection fee.
3 Fee disclosure and consent
Before carrying out any paid inspection, CREST will inform the applicant of the relevant fee and conditions and obtain their confirmation.
If further inspection or additional charges become necessary during the process, CREST will first provide a quote and will proceed with the additional inspection only after the applicant agrees.
Completing an online warranty service application does not mean that the applicant has agreed to pay an inspection fee.
4 Changes to the fee policy
CREST may adjust inspection fees or offer free inspections during specified periods as circumstances require.
If an applicant has submitted a warranty service application under the published rules in effect at the time and the case has been accepted, a later change to the fee policy will not result in a retroactive charge for that case.
CREST will announce any change in advance on its official website and in the Warranty Service Application System, stating the change, applicable conditions, and effective date.
5 Free inspection service and related policy
CREST has offered free inspection service since November 12, 2025. For the applicable conditions and warranty service arrangements, please see the official announcement: CREST Dive Computer Warranty and Service Policy Update — https://crestdiving.com/en/blogs/crest-news/crest-warranty-repair-policy-update
Product shipping and the allocation of related shipping costs are governed by Section 4, Conditional Warranty Service, above.
7. Circumstances Not Covered by Warranty
The following circumstances may be excluded from warranty service or may affect warranty eligibility:
1. The warranty period has expired.
2. Valid proof of purchase or relevant warranty information is unavailable and, even after checking the product serial number and other available information, warranty eligibility cannot be confirmed.
3. The product was not obtained through an official or authorized CREST sales channel and does not meet the terms of CREST's contractual warranty; or its origin is unknown, its serial number is irregular, its authenticity cannot be verified, or it is confirmed to be counterfeit.
4. Damage caused by dropping, impact, crushing, improper operation, failure to follow instructions, or other human factors.
5. Damage caused by self-disassembly, modification, non-authorized repair, or improper replacement of parts.
6. Claims arising from normal wear and tear, cosmetic scratches, aging consumable accessories, or non-functional issues.
7. Damage caused by use outside the product's intended design, beyond trained depth limits, or in an unsuitable diving environment.
8. Other circumstances that CREST determines are not product functional issues arising under normal use.
8. Promotional Products, Special Offers, and Gifts
Some promotional products, limited special-offer products, and other special programs may have warranty periods and service terms that differ from those of standard products.
The applicable warranty period, included accessories, promotion restrictions, and after-sales terms will be stated on the relevant promotion page, product page, or promotion terms. Please review the relevant information carefully before purchasing.
If a promotion page or product page clearly states that a product is subject to specific warranty terms, the warranty period and service terms stated on that page will apply. The warranty period shown on this general warranty page may not apply to that promotional product.
9. Statutory Consumer Rights
This page explains CREST's agreed after-sales services, promotional terms, and warranty coverage.
These terms are not intended to exclude or limit any rights that consumers are entitled to under applicable law. If local law contains mandatory consumer-protection provisions, those provisions will apply and will not be limited by this page.