XuanZu XZ-U608 Portable Headphone Amplifier with 3.7V 3000mAH Battery

Specification:

Model: XZ-U608
Output power: > = 800mW (32 ohms)
Suitable headphone Impedance: 16-300 ohm
Total harmonic distortion: <0.005%
Frequency Response: 10-30KHz
Build-in customized lithium polymer battery capacity: 11.4Wh (3.7V / 3000mAH)
Life time: >10 hours (usually: 10-13 hours)
Charging Interface: Standard MICRO USB 5V
Charging current: 1A, full charge 2.5-3 hours.
Size: 107 * 68 * 24 (L * W * H) --- the maximum size (including the knob, floor mats)

Package Included:

1 x XuanZu XZ-U608 Headphone Amplifier
2 x Ø42mm Rubber Ring
1 x USB Charging Cable

Detail Pictures: