In pictures: Cool gear and gadgets for smartphones...
Lark Silent Alarm and Sleep Sensor
Use your iPhone, iPad, or iPod Touch with the Lark app and the company's Bluetooth wristband to be awakened almost silently. A sensor in the wristband analyzes sleep patterns. The Lark system may be a good choice if you don't want to wake a spouse or if you have difficulty hearing an alarm.
In pictures: Cool gear and gadgets for smartphones and tablets