AWEI Y385 Speaker Promotional Outdoor Bluetooth Speakers 4W (P-1382)

Bluetooth version: 5.1+BR+EDR+BLE
Supported Bluetooth protocols: a2dp\avctp\avdtp\avrcp\hfp\spp\smp\att\gap\g
att\rfcomm\sdp\l2cap profile
Maximum power: 7.7W*1
Receiving sensitivity: < -85dBm
Horn diameter: 66*66mm
Impedance: 4Ω
Bluetooth operating frequency: 2402Hz~2480MHz
Play time: 5~6 hours (70% volume)
Battery capacity: 1,200mAh (Li-polymer battery)
Charging time: 2.5~3 hours