i.Fuzen HP-1

Device:
DeviceBattery Life: 1650 mAh
Supports USB Pass-through
Output voltage: DC 5V
Output current: 500 mA
Maximum Input current: 800 mA
Output Power: 180mW(90mW + 90mW,@32O
Frequency Response: 5Hz ~ 100kHz, +/- 0.23dB
Input Sensitivity: 1.25 Vrms
Maximum Gain: +9dB
Input Impedance: 50kO
Load Impedance: 32 ~ 600 Ohm
Total Harmonic Distortion: 0.002%,@1kHz into 32O
Signal to Noise Ratio: 113dB (A-weighted)
Product size : 62.7mm(W)×133.4mm(H)×15.3mm(D)
Weight: 70g
Compatibility:

iPhone 4 (GSM & CDMA)
iPhone 4S (GSM & CDMA)

Battery:

1650mAh rechargeable lithium polymer battery
DC 5V/500mA Power output
Audio playback Up to additional 44 hours
Video playback Up to additional 11 hours
Talk time Up to additional 8 hours

Headphone Amplifier:
180mW Headphone output power
32 ~ 600Ohm Load impedance
113dB(A-weighted) Signal to noise ratio

Contents:
Headphone Amp, Battery Case
Mini USB Cable
Manual & Warranty