Transmission Version: V5.3 Wireless Distance: less than 10 meters Regularity Answer: 20 Hz–20 kHz Rated Impedance: 160 5 mW of power Unit of Driver: 10mm Capacity of the battery: 80mAh 5V to 80mA Input: 5.5 hours Play Duration: 80 minutes Standby Duration: Two Hours 12g Charging Time