Bluetooth version:5.3
Bluetooth protocol:A2DP、AVRCP、AVDTP、HSP、HFP
Frequency range:20Hz~20KHz
Rated voltage:3.3-5.5V
BATTERY:3.7V,1800AMH
Speaker specification:4Ω5W
Charging voltage:5V
Charging time:5h
Playback time:3.5h
TF support format:MP3
Bluetooth distance:10M
Small audio size:70*65*90mm
Microphone size:130*30mm