• Material: metal

  • Battery capacity: 500 mAh

  • Charging time: 2-3 hours

  • Listening / speaking time: 10-12 hours

  • Waterproof rating: IPX5

  • Charging parameters: 5V

  • Music formats: MP3, wav, wma, Flac, APE

  • Frequency response: 70 hz-20khz

  • Signal to noise ratio: ≧ 90dB

  • Distortion rate: <0.1%

  • Size: 4.8 4.8 4 cm