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SBBN031 Quartz Watch

The Seiko SBBN031 "Marinemaster Tuna" is a 48mm men's quartz watch with a stainless steel case and a black analog dial protected by hardlex crystal. It uses a 7C46 caliber quartz movement. The watch should run for up to 5 years before needing a new battery.

Model nr. SBBN031
Brand Seiko
Gender Men's
Type Quartz
Caliber 7C46
Hacking Yes
Power Reserve 5 Years
Instructions Owner's Manual
Crown Position 04:00
Case Width (mm) 48
Case Thickness (mm) 15
Case Shape Round
Case Material Stainless Steel
Crystal Material Hardlex
Water Resistance (meters) 300
Screw Down Crown Yes
Second Crown No
Moonphase No
Day Window Yes
Date Window Yes
Time Types Hours, Minutes, Seconds
Band Material Stainless Steel
Band Color Silver
Replaceable Band Yes
Band Width (mm) 22
Dial Color Black
Hour Markings Circles, Triangles
Bezel Function Unidirectional
Bezel Material Stainless Steel
Bezel Color Black
On the Bezel Minute Numbering
Inner Bezel
Inner Bezel Color Black
On Inner Bezel Bars
Hand Colors
Hour Hand White
Minute Hand White
Second Hand Black, White