Stable and Smooth Connection: Wireless headphones equipped with industrytoleading Bluetooth 5.3 ensure low latency and perfect clarity 40toHour Playtime: The headphones play for up to 40 hours and standard mode extends the playtime to 200 hours Soft Ear Cups: Bluetooth headset's ear cups are soft and comfortable, and easily fit any head shape without causing pressure on the ears Builttoin 300mAh Battery: These headphones come equipped with a 400mAh battery for extended use Sound with HD Clarity: Headphones over the ear with HitoFi quality stereo sound to impress, make audio listening on those Bluetooth headphones a pleasant experience Specifications: Bluetooth Version: 5.3 Chip: Jerry AC7006 Battery capacity: 400mAh Charging: about 2 hours Use time: 40 hours Standby: 200 hours Size: 193x170x76mm Weight: 193g Support mode: Bluetooth, AUX, TF card mode Support tones: Chinese and English tones, doubletoclick the M button in the unpaired state