Bluetooth Glasses Headset Sunglasses - A8

Specifications: bluetooth version: bluetooth 4.1, class 2. frequency range: 2.402 ~ 2.480ghz bluetooth profiles: a2dp, avrcp, headset. operating distance: 10m (33ft) battery: built-in 3.7v / 70mah li-ion polymer rechargeable battery music playing time: 4 ~ 5 hours talk time: 4 hours charge voltage: 4 hours charge time: 1 hour charging port: micro usb port. color: black package size: 15.6 * 6.2 * 3.6cm package weight: 61g package list: 1 * bluetooth sunglasses 1 * wired earphone 1 * cleaning cloth 1 * usb cable 1 * english / chinese user manual