Gingko Electronics' Flip Click Clock fuses natural materials and Intelligent technology to create a very functional and playful clock. The built in technology lets you turn the alarm on and off by flipping the clock. The clock display automatically disappears when quiet, but still keeps perfect time in the backgound. It lights up again when you give a gentle touch, a little clap, or a simple click of your fingers. It's also super easy to set up. To set the time and alarm, simply touch the fine laser engraved buttons. When the alarm goes off, gently ‘stroke’ any of these engraved buttons on the top to snooze and to turn off the alarm, just flip it over and the numbers will be magically corrected to a normal display. Powered by in-built 2000 mAh rechargeable battery with USB charging cable included or DC5V plug adapter (not included) Alarm clock in sound activated or permanent display 12 or 24 hours display Touch control buttons Battery life: approx 6 months in sound activated display or 2-3 weeks in permanent display Charging time: 3-4 hours