Longines L717 Movement Technical Reference | L717.2 Quartz & Battery
The Longines L717 family appears in multiple Gilded Hour watches, including L717 and L717.2 quartz records from the 1970s–1990s catalogue range. Battery entries vary between listings, so this page is designed to help identify the fitted variant without overstating interchangeability.
Technical snapshot
| Longines designation | L717; related catalogue designation L717.2 |
|---|---|
| Movement type | Quartz |
| Battery entries currently recorded | SR616SW, SR621SW / 364 and SR721SW appear across the connected catalogue |
| Application | Small vintage Longines ladies’ watches; exact case and dial application is watch-specific |
| Base movement | No single base calibre is asserted on this page without a movement photograph or authoritative technical sheet |
Battery and interchange caution
The same L717 family label is attached to records with different battery references. This may reflect different variants or catalogue errors. Check the movement engraving, battery compartment and original cell before replacement. Do not substitute an ETA or other Swiss movement solely because a reseller or forum lists a similar number.
Service notes
Before service, document the movement and battery orientation, inspect the contacts and coil, and verify the available case clearance. Replacement work should compare diameter, thickness, stem position, hand heights, dial feet and battery clamp dimensions.
Longines watches recorded with this calibre family
- Longines Octo Gold Toned Watch with Woven Dial
- Longines Square Gold Watch with Decorated Corners
- Longines Round Watch with Champagne Dial
Sources and attribution
Gilded Hour archive note: This is an original research summary prepared for The Gilded Hour. It is not a reproduction of a Longines or ETA service manual. Calibre names, battery references and replacement suitability must be checked against the movement actually fitted to the watch.