Awei AT7 Bluetooth wireless headphone stereo surround speaker with microphone headset

🌟 Description:• Upgraded Li-polymer battery• Longer battery life• Micro-SD card are supported• Bluetooth version: 5.4• Bluetooth protocols: a2dp 1.3.2\avctp 1.4\avdtp 1.3\ avrcp 1.6.2\ hfp 1.8 \spp 1.2\rfcomm 1.1\pnp 1.3\ hid 1.1.1\sdp core5.3\l2cap 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✳️ Warranty: 6 Months Official Warranty