frequency response: 20 Hz-20 KHz signal-to-noise ratio: > 85 db working environment temperature: centigrade 0 -45

Card headset/movement MP3 player/ running wearing/headphones for wireless headset /TF card/timbre

1,system:Windows98/2000/XP2,USB:USB 2.0:chargeable,stored

3,the memory capacity: don't take the memory, is card type, the biggest support 8 GB, adaptation TF card/micro sd card4, charging power supply: computer USB port DC 5 V; DC 5 C (500 mA) travel charger; DC 5 V (500 mA) car charger4, battery: DC 3.7 V; Rechargeable lithium-ion polymer battery5, continuous working time: about four hours; (because of the use of different variations)6, charging time: about 2-3 hours; (for use of charging devices to different variations); Charging time remember not more than 3 hours7, frequency response: 20 Hz-20 KHz8, signal-to-noise ratio: > 85 db9, working environment temperature: centigrade 0 ° C-45 ° C

Card headset/movement MP3 player/ running wearing/headphones for wireless headset /TF card/timbre