Family: 8L37 jewels55h power reserve36,000 vph (10 Hz)
High-beat automatic movement based on Grand Seiko caliber 9S85, assembled by hand at Shizuku-ishi Watch Studio in Morioka. Features 36,000 vph frequency and 55-hour power reserve. Found in Prospex diver watches.
TECHNICAL SPECIFICATIONS
Movement Type
Automatic
Jewel Count
37 jewels
Power Reserve
55h
Frequency
36,000 vph (10 Hz)
Display Type
Analog
Winding
Automatic (Unidirectional)
Shock Protection
Diashock
FEATURES
Sweep SecondsMagic Lever Winding
QUICK FACTS
BRAND
TYPE
AutomaticSTATUS
In ProductionMANUFACTURE
In-houseBASED ON
Seiko 9S85CALIBER FAMILY
8LCOUNTRY
JapanALSO KNOWN AS
cal. 8l55seiko 8l55