Leaden Wireless Bluetooth MP3 Sunglasses Polarized Lenses Music Sunglasses V4.1 Stereo Handfree Headphone for iPhone Samsung Most Smartphone or PC (Black)

Bluetooth Version：Bluetooth 4.1 compatible Transmit Distance：10M Conversation Time：6H Music Time：5H Standby Time：150 Hours above Charging Voltage：5V DC Charging Time：About 2 hours Bluetooth Protocol：Headset;Hands-free Bluetooth Spec：V2.1/3.0/4.0+EDR;Stereo Sound + CVC noise reduction....