Main Features: <br />- Bluetooth V3.0・ transmission range up to 10m.<br />- Polarized lens・ return true colors and eliminate glare and UV ray・ it can be used as a pair of sunglasses.<br />- With a pair of stereo earphones・ listen music at any time.<br />- Adjustable nose pads to satisfy different needs・ built-in metal steel disc to increase flexibility.<br />- The frame was made of TPU material・ sweat proof and anti-slip functions.<br /><br />Specification: <br />Bluetooth: V3.0<br />Bluetooth name: BT glasses8<br />Battery: 70mAh Li-ion battery<br />Working time: 12h<br />Charging time: 2h<br />Impedance: 32 ohm<br />Charging port: mini <br /><br />Package weight: 0.192 kg <br />Product Size(L x W x H): 16.30 x 17.50 x 4.00 cm / 6.42 x 6.89 x 1.57 inches <br />Package Size(L x W x H): 19.00 x 9.00 x 8.00 cm / 7.48 x 3.54 x 3.15 inches <br /><br />Package Contents: <br />1 x Music Glasses<br />1 x Bag<br />1 x USB Cable<br />1 x English User Manual