Caliber
B620 Analog Chronograph
Movement
Eco-Drive
Caliber Features
+/- 15 seconds per month, 24-hour display, 270 days power reserve, Date, Eco-Drive, Insufficient charge warning feature, Stopwatch: max.60 Min,1/5 Second
Diameter 44.8mm, Height 12.4mm
Case Features
Stainless Steel, Bottom screwed-in
Bracelet Features
Stainless Steel, Pin buckle, 24mm
Water Resistant
10ATM 100M
Caliber
B642 Analog Chronograph
Movement
Eco-Drive
Caliber Features
+/- 15 seconds per month, 210 days power reserve, Date, Eco-Drive, Insufficient charge warning feature, Stopwatch: max.60 Min,1/5 Second
Diameter 43mm, Height 11.6mm
Case Features
Stainless Steel, Bottom screwed-in
Bracelet Features
Stainless Steel, Pin buckle, 22mm
Water Resistant
10ATM 100M