Bluetooth Solution: V4.2
Operation range: 10m
Speaker diameter: 2*40mm
Radio Frequency: 20-20,000Hz
Rated voltage: DC 5V/1A
Sensitivity at 1KHz: 110 3dB
Battery Polymer Li-ton: 300mAh
Charging Time: 2 hours USB Charging
Play Time: Approx 10 hours
Maximum Power input: 100mW