Adopting great quality material, which lets you use it for a very long time. Though it is simple in design, it's so practical when you use it. The excellent workmanship of our product will bring you a good experience. Easy and convenient to use, it is a very useful wireless amplifier. Features - Color: Black. - Size: 8.50X3.30X3.20cm/3.34X1.30X1.26 inch. - Material: Plastic. - Power amplifier: 2 x 3W. - Radio FM frequency band: 87.5MHZ-108.0MHZ - Remote controlled distance: 5-10M. - Voltage: DC 5V. - Can be directly connected to speakers, with power amplifier and functions. - Support the power and memory function: memory off before the song played and the volume can be memorized to the current point. - Support function introduction: Support MP3 / USB / / Line in / FM / wireless / DC 5V. - Four Button: The previous song / play pause / next song / MODE. - Adopted from material, it is durable and use. Package list: 1 x Board (with Cable)