Portable HIFI Stereo Audio AMP Headphone Earphone

Model Number: Portable HIFI Stereo Audio AMP Headphone Earphone Amplifier 3.5mm
Input Voltage: 32Ω
Output Voltage: ≤ 200Ω
Output Power: Maximum. 130 mw x 2/16 Ω
Signal-to-noise Ratio: 95 DB
Dynamic Range: 90 DB
Separation: 70 DB
Battery Life: 30 hours (approximately)
Battery: Built-in lithium battery, 200mah
Size: Approx. 70 * 25 * 10 mm