Seiko Prospex Sea GMT – 42 mm

Reference Number
SPB381J1

TECHNICAL SPECIFICATIONS

Calibre
Calibre no.: 6R54
Movement Type: Automatic with manual winding
Power Reserve/Battery Life: Approx. 72 hours (3 days)
Accuracy: +25 to -15 seconds per day

Case
Case Material: Stainless steel (super hard coating)
Glass Material: Sapphire crystal
LumiBrite: LumiBrite on hands, index(es) and bezel
Clasp: Three-fold clasp with secure lock , push button release with extender
Band/Bracelet: Distance between lugs 20mm

Other Specifications
Crystal Coating Anti-reflective coating on inner surface
24-hour hand
Stop second hand function

Layout
Water Resistance: 20 bar

Case Size
Thickness: 12.9 ㎜
Diameter: 42.0 ㎜
Length: 48.6 ㎜
Weight: 176.0 g

Features
Other Features
Unidirectional rotating bezel
Screw-down crown
Three-fold clasp with secure lock
Screw case back