Product model:CozyPods W7N Pro. Wireless version:V5.4 Transmission distance:≥10 M Frequent sound:20HZ~20KHZ Impedance:320 Rated power:3mW Battery capacity in the charging compartment:300mAh Headphone battery capacity:40mAh The number of rechargeable times in the charging compartment:2~3 times Input:5V=-=300mA Playing time:5~7 hours Standby time:90 days Charging time:About 1.5 hours Net weight of the product:35 grams Size of charging compartment:59*46*26 millimetres