Lark Un-Alarm Clock and Sleep Sensor review
Transform your iPhone 4 or 3GS, iPad or iPod touch (3rd and 4th generation) into a personal sleep solution with LARK, the first silent un-alarm clock and sleep sensor.
Night-time wristband nudges you awake.
Sleep sensor works exclusively with iOS devices.
Shows how well you slept and how to sleep better.
Sleek cradle charges your phone and wristband.