MATERIAL:Plastic

Bluetooth Version: V5.2

Bluetooth Chipset & Chipset number: Jieli

Bluetooth Range: 10m

Speaker BatteryL:18600 3.7V 1000mah Microphone:14500 400mah

50% & 100 % Play time: 2 Hours - 4Hours

Charge Input: DC 5 V, 1 A

Charge Time: 3-4Hours

Number of Driver & Driver size:Ø52mm，4Ω/5W*1

Total RMS output power: 10W

Signal to Noise Ratio: 90 dB

Sensitivity: 80 dB                                                                    

Frequency Response: 120 Hz -180 kHz

Max size for USB or Micro SD Card: 32 GB