2100 Series 

Resin and stainless steel composition

Analog-digital dial

Tough solar powered

Mineral glass

Shock resistant construction

200-meter water resistance

Wireless linking using bluetooth

Approx battery life: 3 years on SR726W X 2

World time zones

Stopwatch, timer, alarm, and hourly time signal

Full auto-calendar

Double LED light

Mute feature with button operation on off-tone

Size: H 0.46 x W 1.74 x D 1.94 in

Weight: 72 grams

Style: gbm2100-1a

Material: Resin / Stainless Steel