9R15
Spring Drive
Caliber 9R15 is a high-precision variant of the standard 9R65, featuring an enhanced monthly accuracy of ±10 seconds compared to ±15 seconds. This performance is achieved by selecting only the most stable quartz crystals, signaled by an 18K yellow gold rotor visible through the case back.
Caliber Details
- Manufacturer
- Grand Seiko
- Base Movement
- Grand Seiko 9R65
- Type
- Spring Drive
- Power Reserve
- 192 h
- Jewels
- 30
- Display
- Analog
- Hands
- Hours, Minutes, Seconds
