Before you buy: This amplifier is suitable for families. If it is used in the home, it only supports the European/US standard. You need to convert the appropriate plug. If it is used in a car, it will be used in 12V cars.Thank you! Features: -Mini HIFI digital bluetooth audio power amplifier. -TF Card, AUX, U disk, MP3 format play, support bluetooth wireless connection. -Supports FM stereo radio. -With treble, bass, and volume control, very easy to use. -Low distortion supplies a clearer, stronger and more powerful sound. -Two main channel output. -With Remote control function. -DC/ AC power in, Suitable foe home or your car. Specifications: Color: Black Material: iron Size: 19*15*4.5cm Bluetooth version: 4.0 Remote control battery: a CR2025 button battery not buit in Rated impedance: 4-16 Rated power: 15+15W( It is recommended to connect a pair of speakers below 6 inches) Peak power: 800W Power supply requirements: DC 12V/AC 220V/110V Function introduction: pluggable TF card / plug U disk / with remote control / with FM radio / with Bluetooth Audio input: 3.5 holes in the front seat, rear lotus seat can be connected: computer / MP3 / DVD / CD and other audio signals Audio output: R left + L right clip for the channel output, positive and negative, one speaker Precautions: 1. The external connection of the power supply should be clearly divided into positive and negative poles, and the intermediate core of the power amplifier DC seat is positive. 2. Do not store MP3s in internal cards and USB flash drives in folders. Package Included: 1 X Audio Amplifier 1 X Remote Control(CR2025 battery not built-in)