Product parameters:

Audio formats: MP3/WMA/WAV

Memory used size: 1GB-8GB

Sensitivity: ≥ 86DB

Frequency range: 20HZ-20KHZ

Battery type: lithium battery

USB: USB 2

Operating system: WINDOWS 98/2000/XP

Use of time: can be used for up to 6 hours

Working temperature: -10~45 degrees

Earphone: earphone configuration of blister packaging USB charging cable