Black HiFi Portable 3.5mm AUX Outputs Noise Reduction Stereo Earphone Audio Amplifier AMP with Rechargeable Battery for Mobile Phone

Features: 1. Mini HiFi power amplifier, delicate, small, portable and portable. Enhanced output, enjoy high definition. Enjoy the high level sound effects at all times. 2. Compatibility, specially designed for mobile phones, can also be used for car audio, outdoor speakers, etc. 3. Rechargeable lithium battery, it adopts 200mah capacity rechargeable lithium battery, can work for a long time. 4. You can improve the sound quality of your smartphone so that you can enjoy high definition pure stereo sound without losing the truth. 5. HIFI sound, noise reduction and dynamic enhanced distortion, perfect pure stereo effect, high definition music sound quality optimization. Specifications: Type: Cell Phone Amplifier Material: Aluminium Alloy Color: Black Output Power: Maximum. 300 mw * 2/16 ? Frequency Response: 2 - 27 KHz Signal-to-noise Ratio: 95 DB Dynamic Range: 90 DB Separation: 70 DB Distortion: ? 0.006% Input Impedance: 32? Output Impedance: ? 200? Working Temperature: - 40 °C - 60 °C Storage Temperature: - 40 °C - 85 °C Storage Humidity: 10% - 90% Battery: Built-in lithium battery, 200mah (charged by Micro USB cable) Battery Life: 30 hours (approximately) Size: Approx. 68 * 25 * 10 mm / 2.7 * 1 * 0.4 inch (without wires) Battery protection: Yes Overcurrent protection: Yes Overpressure protection: Yes Short circuit protection: Yes Package Weight: 53g Package Include: 1 x HiFi Amplifier (excluding charging line)