Awei AT7 Bluetooth wireless headphone stereo surround speaker with microphone headset

Upgraded Li-polymer battery

Longer battery life

Micro-SD card are supported

Bluetooth version: 5.4

Bluetooth protocols: a2dp 1.3.2avctp 1.4avdtp 1.3 avrcp 1.6.2 hfp 1.8 spp 1.2rfcomm 1.1pnp 1.3 hid 1.1.1sdp core5.3l2cap core 5.3

Channel system: stereo

Battery capacity: 600mAh

Charging time 2.5h

Play time ≈70h

Call time ≈40h

Horn diameter: 40mm

Horn impedance: 32Ω

Horn sensitivity: 121±3dB

Best transmission distance: <1m

Maximum transmission distance: 10m

Bluetooth operating frequency: 2.402GHz~2.480GHz

Wearing method: head-mounted

Charging interface: Type-C

User manual: Chinese and English

Accessories: USB charging cable, user manual