Specifications:
Color: Black
BT Version: 4.2
Working Distance: up to 10m
Frequency Response Range: 200Hz-20KHz
Speaker Sensitivity: 78dB
Speaker Unit: 2.5"
Speaker Power: 4ohm, 10W
Signal-to-Noise Ratio: ≥80db
Distortion: ≤0.1%
Battery: Built-in 1200mAh 3.7V 18650 rechargeable lithium-ion battery
Playback time: about 3-4 hours (in medium volume)
Charging time: about 2.5-3.5 hours
Charging Voltage: 5V/ 1A