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