2GB MP3 Sunglasses (Black)

* Digital formats supported: MP3/WAV/WMA
* PC interface supported: USB2.0
* Mfr estimated battery life: 5 hours
* Battery tape/capacity : Bullt-in Lithium lon Polymer/3.7V.150mAH
* Maximum input power rating: 5VDC
* Earphone output power: 5mw
* Voice output frequency: 20Hz-20Khz
* THD: 0.05%
* Recharging time: 2 hours
* Normally works current: 30-35mA.
* Signal-to-noise ratio: 87.2db
* Earphone impedance: 16
* Weight: 52g
* Dimensions: 172*160*40mm
* Extended Length of Earphonefixed lever: 14mm
* Rotary degree of earphone fixed lever: 270°
* Rotary degree of earphone: 90°