LiNKFOR HiFi Headphone Amplifier Built-in Power Bank Function

  Specification： Maximum power output 125mW  16Ω Load impedance 16-300Ω Working voltage DC3.7-4.2V Charging voltage DC5V Frequency response 20Hz-20kHz(±3dB) Battery capacity 3000mAh (3,7V) Lithium-Battery Amp Using Time More Than 15 Hours Distortion 0.004% SNR ≥120dB Dimension(L*W*H) 103*54*13mm Net weight 113g