产品描述
1.Wireless transmission distance: CLASS II
2. Battery capacity: 350MAH
3.Frequency response range: 20-20KHZ
4.Sensitivity: 95 DB
5.Speaker impendence: 40±2 Ohm
6.Speaker driver: 40MM
7.Charging time: 2-3H
8.Playing time: 10-12H( based on two-thirds of maximum volume)