|Winding:||Automatic, Central Rotor Automatic Winding|
|Diameter:||18.40 mm (8.25 ligne)|
|Hands:||Central Hour Hand, Central Minute Hand|
|Distinguishing Technical Characteristics|
Clockwise Balance Cock
Cal. FP 815 (also known as Cal. FP 8.15) is an ultra-thin automatic movement from Frédéric Piguet. As an ultra-thin movement it uses a flat hairspring.
It is closely related to the hand-winding Cal. FP 810 and Cal. FP 816, which adds small seconds.