Wireless Version:V5.1 Wireless Profiles: A2DP / HFP / AVRCP / HSP Transmission Distance: 10m Charging Time: about 2 Hours Standby: 280 Hours Music Playback: About 5 Hours (Earbuds) These wireless headphones reduce noise, giving you a wonderful listening experience Depending on the pressure free smart touch control, the Bluetooth headphones are easy to operate Bluetooth earphones designed Ergonomically, it is comfortable to wear And do not fall easily at the same time the earbuds come with a charging case, easy and quick to charge these headphones are waterproof, so you don't have to worry about any damage caused by sweat and water