Casio G-SHOCK GA-B2100-1AER watch, a modern design that makes it a different kind of G-SHOCK, with the features you need for your workouts, plus Bluetooth and solar power.

• Analog-digital.
• Mineral crystal.
• Carbon fiber reinforced resin case in black and resin strap.
• Easy-to-read positive display.
• Dual illuminator that lights both parts of the dial.
• G-SHOCK, shock resistant.
• Luminous hands and indexes.
• Bluetooth for wireless connection to a smartphone, giving access to various functions such as phone finder, flight position log via GPS,...
• Solar: a solar cell collects energy and sends it to a rechargeable battery.
  
• World time for 29 time zones.
• Stopwatch in 1/100 second, up to 24 hours.
• Countdown timer from 1 second to 24 hours, so you never forget a special or recurring event.
• 5 daily alarms, so you never miss an appointment.
• Hand-shift function for easier reading of the display,
• Auto calendar.
• 12/24-hour format.
• Button operation tones that can be turned on or off.
• Water resistant to 200 m.
• 3-year warranty.