support files

MP3, WMA

signal-to-noise ratio

> 85 db

Working time

about 4-6 hours

frequency response

20 hz - 20 KHZ

support system

Windows 2000 / XP

battery

3.7 V DC;Rechargeable Li-ployer  battery

Charging time

about 2-3 hours.Please don't more than three hours

Charging power supply

Computer USB DC 5V;DC 5V(500mAh) travel charger, DC 5V(500mAh) car charger

memory capacity

without memory, Max upto 8gb, supporting TF card/micro sd card

USB interface

USB 2.0 can charge the battery to the MP3 headphones and transfer files

Note:

     Charge remind: After receiving the goods, please charger 3hours to the MP3 headphone.Please don't overcharge, otherwise,it will damage the battery or program.