Product specifications and parameters

1. Support system: Windows98/2000/XP

2. USB interface: high-speed USB 2.0; can charge MP3 headphones and transfer files

3. Memory capacity: without memory, it is a card type, maximum support 8GB, adapt to TF card/micro sd card

4. Charging power supply: computer USB port DC 5V; DC 5C (500mA) travel charger; DC 5V (500mA) car charger

4. Battery: DC 3.7V; rechargeable lithium ion polymer battery

5. Continuous working time: about 5 hours; (varies due to different usage conditions)

6. Charging time: about 2-3 hours; (varies due to different charging equipment used); remember not to exceed 3 hours for charging time

7. Frequency response: 20Hz-20KHz

8. Signal-to-noise ratio: >85db

9. Working environment temperature: 0��-45��