• Tough Solar Power
• Shock Resistant
• 200M Water Resistant
• Full Auto EL Backlight with Afterglow
• 4 Daily alarms and 1 Snooze Alarm
• Hourly time signal
• Full auto-calendar (pre-programmed until the year 2099)
• 12/24 hour formats
• Button operation tone on/off
• Accuracy: +/- 15 seconds per month (with no signal calibration)
• Battery power indicator
• Power saving function
• Storage battery: Solar rechargeable battery
• Approx. battery life: 9 months on full charge (without further exposure to light)
• Module: 3405

As an upgrade to it's predecessors, the new GWM500 add the ability to connect with the radio transmitter in China to update the watchs' time & date in addition to adding an additional 18 cities added to the world time mode, for a total of 48-cities. The watchs' time memo function has been replaced with a countdown timer. Black resin band digital watch with neutral face.