G-Shock GD100-1BBased on the successful analog digital GA100 G Shock. This is an all digital version in a large size and wide face which not only gives a look of power and strength but makes it extremely easy to read and use with its oversized buttons. For added visibilty in dark conditions a newly designed high density LED light has been employed to light up the dial face from behind. The result is a super luminous display that's a true reflection of G Shock's

Button Operation Tone on/off

Rotation of the blades reveals red coloring behind the disk

Japan) Frequency: 40

Stopwatch 1-second stopwatch

Functions include time of day

Features: Mineral Crystal Glass 200m Water Resistant Shock Resistant Low Temperature Resistant (-20 C/-4 F) Case / Bezel Material: Resin Band Material: Resin Electro-luminescent backlight Tide Graph for current tide conditions at a glance Tide graph (tide level for specific date and time) Moon Phase Graph for graphic display of moon phases Moon data (moon age of the input data moon phase graph) Flash alert flashes with buzzer that sounds for alarms hourly time signal countdown timer time up alarm countdown timer progress beeper and stopwatch auto start Multi-function alarms: 3 independent multi-function alarms (2 one-time alarms and 1 snooze alarm) World time: 29 time zones (48 cities) city code display daylight saving on/off Stopwatch: 1/100-second stopwatch measuring capacity: 23:59'59

Barometer Display range: 260 to 1

Screw Lock Back

These pipes not only act to protect buttons from impact they also enhance button operation

Countdown range: 100 minutes

- Measuring modes: Elapsed time

a rugged but thin 8mm case design