Watch Review & Details: Longines HydroConquest L3.689.4.03.6
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
LFP 564
This watch requires a standard battery. Grab a replacement below.
Power
Buy Replacement Battery
Amazon: LFP 564
Tool Kit
Buy Recommended Tool
Amazon: Watch Repair Kit