Power supply charge voltage: DC 5V (USB)
Battery characteristics 3.7V 400mAh
Bluetooth version V5.0
Bluetooth channel emission power+6dbm
Bluetooth Sensitivity 110dB
Bluetooth Frequency 2402 – 2480 MHz
Bluetooth action range 10m
FM frequency 87.5-108 MHz
Speakers 40mm/pcs
Frequency Response 20-20KHZ
Charging time 2-3 hours
Playing time 10 hours