Promotional Bluetooth Speaker with Bluetooth and FM Radio Function. The Wooden Bluetooth Speaker is easy to take and easy to play. You can listen music and sing a song anytime or anywhere for your birthday or party. The Mini Bluetooth Speaker is build in 800MAH battery, it is charged by USB cable.Welcome ODM/OEM order. Portable&BLUETOOTH 1) Output power: 3W*1 2) Frequency response: 150 Hz-18KHz 3) Horn Size: 3inch/4Ω 4) Built-in battery: lithium battery 3.7V/800MAH 5) Input power: 5.0V 6) With Bluetooth function Speaker function: Support PC audio input, SD and USB card, FM Radio Accessories: 2mix1 AUX and USB charging cable, Remote control Size: 140*124*183mm Meas: 680*415*312mm(Box/16units)