Grand Seiko SBGR255

Features

72 hour power reserve

With an upgraded Caliber 9S55 mechanical movement, this watch typifies the high quality in the Grand Seiko collection.
The watch has a 3-day power reserve and combines the latest in hairspring technology with an escapement developed through the MEMS technology to achieve high accuracy and stability when worn.
The case's mirror finish has the lustrous shine that only multi-faceted Zaratsu polishing can achieve.
The delicacy, strength and beauty of the movement can be enjoyed through
the exhibition case back.

Specifications

Exterior

Exterior: Stainless steel

Case back: See-through & Screw case back

Glass Material: Dual-curved sapphire crystal

Glass Coating: Anti-reflective coating on inner surface

Case size: Diameter 39.4mm

Lug-to-lug 46.8mm

Thickness 13.5mm

Band width: 19mm

Clasp type: Three-fold clasp with push button release

The perimeter of Band: 206mm

Movement

Caliber no.: 9S65 Instructions

‍Movement Type: Automatic with manual winding

Power reserve: Approx. 72 hours (3 days)

Mean daily rate:+5 to -3 seconds per day

• Mean daily rate is a mean value of daily rates in a condition where the movement before assembly in a case is measured in six positions in a fixed manner under artificially controlled environment for 12 days.

Functions

Water resistance: 10 bar

Magnetic resistance: 4,800 A/m

Other details / Features:

• Screw-down crown
• 35 jewels