|Reserve:||46, 50 hours|
|Diameter:||36.60, 37.20 mm ( ligne)|
|Hands:||Central Hour Hand, Central Minute Hand, Lépine Small Seconds Hand|
|Production: 2005 – Current|
Cal. ST3600, produced by Tianjin Seagull Corporation, is a hand-winding movement with Lépine small seconds (at 9:00) similar to the Unitas 6497. It features a classic bridge design and finishing on the back side.