Bluetooth chip: CSR 

Impedance: 32Ω 

Transmission distance: 15 meters 

Frequency response: 20 HZ-20 KHZ 

Battery capacity: 6500 mAh 

Play time: 20-24 hours 

Output probability: 40mW 

Interface: 3.5 mm 

Net weight: 222 g 

Charging time: 2-3 hours 

Standby time: about 800 hours 

Accessories: 3.5 mm plug audio cable, 650 mA lithium battery, USB cable