A8 Smart Bluetooth Headset Polarized Sunglasses

Specifications: model: a8 item name: smart bt glasses bt specification: v4.1+edr frequency range: 2.402-2.480ghz transmission power: class2 bt mode: headset, a2dp avrcp transmission distance: 10 meters music playing earphone time: 4 hours phone-call earphone time: 5 hours battery capacity: 3.7/110mah charge voltage: dc5v/500ma charging time: 2 hours earphone power: 32ω/0.5w receiving sensitivity: 40dbm audio range: 20hz-20khz distortion degree: less than equal 0.2%95db colour:black material:metal package contents: 1 x smart bt glasses 1 x charging cable 1 x in-ear headset 1 x storage case