The EFB-680 series is designed with an artificial sapphire crystal and an octagonal bezel. Different models use different material straps, targeting young users of different ages. Leather straps are more popular with the younger generation. The nylon strap adds a sporty touch that is in line with youth. In addition, the EFB-680 series features an artificial sapphire crystal and an octagonal bezel design. Strap with different materials is suitable for users with different needs.
specification
Case dimensions (L×W×H)
48 × 45.8 × 10.5 mm
weight
79 g
Case and bezel material
Stainless steel
watchband
Leather strap
Water resistance
100-meter water resistance
Power and battery life
Approximate battery life: 3 years for SR920SW
glass
Artificial sapphire crystal with non-reflective coating
Backplate
Screw-lockable case back
Surface treatment process
Black ion-plated bezel
stopwatch
1/10th of a second stopwatch Maximum Range: 59'59.9'' Measurement mode: elapsed time, split time, 1st and 2nd place time
precision
Accuracy: ±20 sec/month
Other features
General Timing: Hands: 3 hands (hour, minute, second), 3 dials (1/10th of a second stopwatch, stopwatch minutes, stopwatch seconds)
