Application: DRIVING GIFTING Driving,boating,biking,golfing,fishing,skiing,mountaine SUNGLASSES With Bluetooth headset 1.with bluetooth headset2. can be connect with network telephone,MP3(cell phone have mp3 function ), SKYPE chatting3. with Inner layer for short sight or presbyopic lenses4.120 hours standby time, up to 6 hours talking time5. with 3 legs, easy for changing when charging Bluetooth ...