🔍 CREST Dive Computer Serial Number Guide

Each CREST dive computer has a unique Serial Number printed on the back of the unit.
By checking this number, you can quickly identify the product’s color, year of manufacture, production week, and serial code.

Please refer to the following instructions according to your model to interpret the serial number.

🧭 CR-4

Example number: CBK 25 16 0015

Location	illustrate
Code 2-3	Representative color	BK = Black, WS = White, CR = Silver
Code 4-5	Representative year	25 = 2025
Codes 6-7	Represents week number	0 1–52 (52 weeks in a year)
Last 4 digits	Represents the serial number of the computer table

🧭 CR-5L

Example number: CBK 25 16 0015

Location	illustrate
4th code	Representative color	B = Black, Y = Yellow, W = Blue
Codes 5-6	Representative year	25 = 2025
Codes 7-8	Represents week number	0 1–52 (52 weeks in a year)
Last 4 digits	Represents the serial number of the computer table

 

🧭 CR-1

Example number: CR125160015

Location	illustrate
Code 4-5	Representative year	25 = 2025
Code 6–7	Represents week number	0 1–52 (52 weeks in a year)
Last 4 digits	Represents the computer table serial number

🧭 CR-F

Example number: CRFY25160015

Location	illustrate
4th code	Representative color	Y = Yellow, P = Pink, W = White
Codes 5-6	Representative year	25 = 2025
Codes 7-8	Represents week number	0 1–52 (52 weeks in a year)
Last 4 digits	Represents the serial number of the computer table

 

📌 Dealer Operation Reminder

• Please make sure to check the product’s manufacturing date and accurately inform customers about the warranty coverage and replacement options.
• All repair or replacement requests must be submitted through the Online RMA System to ensure complete and accurate records:
  
  • 💻Online Repair System ｜ rma-eopi-hub
  • 📩 Contact via Email ｜ info@crestdiving.com

 

Thank you to all our partners for your continued support!
Let’s keep working together to create safer and more wonderful underwater experiences for every diver. 🌊

— CREST Team