Bluetooth Collar Headphones With Microphone For Running / 1.5 Hours Charging Time

Retractable Bluetooth Neckband Headphones 920 V4.1 headset with Microphone Sport Running Silver Quick Detail : Bluetooth Chip: CSR8645+Aptx Bluetooth Version: V4.1 Working Distance: 33FT 2 Devices Simultaneous Connection:Yes Sweatproof: Yes Music/Talk Time: 10hrs Standby Time: 300hrs Compatibility with: iPhone,iPad,Samsung,and any Bluetooth enabled device Description: Hi-Fi TUNES&HANDS FREE CALLING : Featured with CVC6.0 noise reduction technology, Bluetooth 4.1 and CSR 8645