Casio G-Shock Tone On Tone watch, red, GMA-P2100-4AER
Red Casio G-Shock Tone On Tone watch with a slim bio-based resin case and 200 m water resistance
The case, strap and dial are all the same matte red shade, which is where the Tone On Tone model gets its name. The slim case is 40.2 mm wide and 11 mm thick, the watch weighs 40 g, and the strap fits wrists of 145–190 mm. This is why this women's watch also fits a small wrist. The octagonal bezel, raised hour markers and luminous hands make the dial easy to read.
Alongside the analog time, the digital display offers world time, an alarm, a stopwatch and an automatic calendar up to the year 2099. Water resistance is 200 m / 20 atm, so the watch is suitable for swimming, water sports, snorkeling and free diving, but not for scuba diving. The quartz movement runs on a battery. The roots of G-SHOCK go back to 1983, when Kikuo Ibe designed the first model.
Product number: GMA-P2100-4AER
Brand: Casio
Product category: Women's watches
Movement: Quartz (battery)
Battery life: approx. 3 years
Features: Timer / chronograph, digital display, alarm, world time, multifunction, calendar, perpetual
Crystal: Mineral crystal
Case material: Bio-based resin
Case color: Red
Case width: 40.2 mm
Case thickness: 11 mm
Weight: 40 g
Strap material: Bio-based resin
Strap color: Red
Strap length (wrist circumference): 145–190 mm
Dial color: Red
Water resistance: 200 m / 20 atm
Luminous: Yes
Frequently asked questions
Does the watch need a battery?
Yes, the watch has a quartz movement and runs on a battery. Battery life is about 3 years.
What does water resistance of 200 m / 20 atm mean in use?
The watch is suitable for swimming, water sports, snorkeling and free diving. It is not suitable for scuba diving, because the watch does not have a "Diver's" marking. Do not use the crown or buttons underwater.
Does the watch fit a narrow wrist?
The strap length is 145–190 mm, the case is 40.2 mm wide and 11 mm thick, and the watch weighs 40 g. It is compact in size.
What functions does the watch have?
The watch has a stopwatch, alarm, world time, calendar and automatic calendar. It also has a double LED light and luminous hands.
















