Watch Catalog

Casio G-Shock GAS-100-1A

Silver, 55.1 × 52.5 mm, module 5445, solar.

Specifications

Module
Casio module 5445, solar powered · how to set it
Power
Tough Solar (Solar powered)
Accuracy
±15 seconds per month
Case size
55.1 × 52.5 mm (length × width)
Thickness
16.7 mm
Case
Resin / Stainless steel
Crystal
Mineral Glass
Water resistance
200 m
Weight
76 g
Strap
Resin Band
Colour
Silver
Features
12/24-hour format, Alarm/hourly time signal, Battery display/alert, Calendar, Energy saving feature, Hand shift feature, Light, Light color, Mute feature, Run time, Shock Resistant, Stopwatch, Timer, World time
Released
2017-08
Series
Casio G-Shock, GAS-100

Questions

What module is in the Casio GAS-100-1A?

Module 5445, a solar powered movement. The module number is engraved on the caseback, and Casio's operation manual is filed under it: the module page links the manual and lists every watch that shares it.

Does the Casio GAS-100-1A need a battery change?

No routine change: it is solar powered and recharges its cell from light. Casio's power spec: Tough Solar (Solar powered).

Does the Casio GAS-100-1A have a sapphire crystal?

No. The GAS-100-1A has a Mineral Glass crystal.

How water resistant is the Casio GAS-100-1A?

200 m (20 bar). That covers swimming, snorkelling and skin diving; it is a certified diver's watch only if the brand says so.