Bluetooth Version: 5.0 Input Mode: Bluetooth , AUX, TF Card Speaker Full Range unit: 45mm 4ohms Speaker Power: RMS 5W Power Output: 5W Charging Voltage: 5V/1000mAh S/N: ≥ 80db Distortion: ≤10% Frequency Response: 100Hz-20KHz Battery Capacity: 800mAh /3.7v Passive Bass: 50mm Working Time: About 6 hours Charging Time: About 2.5 hours Bluetooth Transmission Distance: about 10m