Quick Answer
The Omega Constellation CD168017SP is a quartz timepiece powered by a 394 battery. Under normal operational conditions, this cell provides approximately 2 to 3 years of continuous power before needing replacement.
How to Replace the Battery in a Omega Constellation CD168017SP
Replacing the battery in your Omega (standard size, stainless steel) requires carefully inspecting the case back. Most quartz dress and sport models utilize either a snap-on back or a multi-notched screw-down case. Using an appropriate watchmaker case wrench or pry knife prevents slipping and scratching the stainless steel finish. Avoid touching the new battery surfaces directly with your fingers, as skin oils can reduce conductivity.
Disclaimer: The video above is for example and general guidelines only. It may not be entirely specific to your exact model, and quality/accuracy depends on third-party availability. If in doubt, please refer to your specific watch handbook or consult a professional.
Required Power Source
This watch requires a standard battery. Grab a replacement below.
Watch Specifications
| Brand | Omega |
| Model Info | stainless steel • classic dial |
| Movement / Power | quartz |
| Battery Code | 394 |
Frequently Asked Questions
What battery size does the Omega Constellation CD168017SP use?
This timepiece operates on a 394 battery cell.
How long does the battery last in a Omega Constellation CD168017SP?
A quality replacement cell typically lasts between 24 and 36 months.
Can I change the battery myself?
Yes. With a basic case opener and non-magnetic tweezers, replacing the battery takes under 10 minutes.