Cool sunglasses to protect eyes from bright light harms
Unique touch key for operation;Handsfree phone call
Stereo music support;Noise reduction & Echo cancellation;Work with Android phone, for Iphone
You can go to glasses shop to change the standard polarized lens to prescription lens
Widely used for outdoor action like hiking, jogging, golfing, fishing, boating, driving, camping, cycling, traveling, etc

Specifications:
Chip: CSR
Bluetooth version: V2.1+EDR
Bluetooth model: Hands free / Headset / A2DP / AVRCP
Frequency range: 2.402--2.480GHZ
Transmission power: Class 2
Power charger: USB DC5V
Transmission distance: about 10M
Music playing time: 3-4 hrs
Talking time: 4hrs
Charging time: 1 hrs
Weight: 24g

Package Content:
1 x K3 Sunglass headset
1 x charging cable
1 x earphone