Bluetooth 4.0 ,Chipset: CSR8635 Bluetooth Profiles :HFP ,HSP,A2DP,AVRCP, decoder support: APTX, SBC, MP3 and AAC aptX HD audio technology Noise reduction: CVC Version 6.0 ,clear voice capture technology Smart Voice alerts iOS battery status monitor Operating Range: 10m Music time: about 10 hours Standby time: about 550hours Charging Time: about 2 hours Talking Time: 12 hours Built-in 200 mAh battery Wear way:Neckband Package Include 1 x Bluetooth Headphone 2x Replacement Earbuds 1xUser Manual 1xCharging cable