Archimedes and the Door of Science (Living History Library)

With a design created by pop superstar Katy Perry, the purchase of this Whatever It Takes watch helps support those in need.

3MOS System Pro

Leica Dicomar Lens

Full 3D HD

Experience brilliant, HD streaming audio plus natural, clear calls

Smart Sensor technology manages your calls and automatically performs time-saving functions

Monitor your headset battery level on your iPhone or Android (3.0 or higher) smartphone

Up to 6 hours of talk time, up to 120 hours (5 days) of standby time

What's in the Box: headset, three sizes of ear tips, charger, USB cable, operating instructions

Delivers noise ...