Model Number: WY-081-02 Brand Name: WANYI Key Specifications/Special Features: 1.LED colorful lights2.Wide range of applications3.The speaker is not max volume at the factory setting, keep pressing the vol+ to increase the vol, or increase your device vol.3.The speaker will under Bluetooth mode automatically when turn on, press the power key to change the TF and aux mode (Bluetooth-TF-aux) Rated impedance4Ω Rated voltage DC 5V Power Rating 3W Speaker Diameter 52MM Material ABS Channels Mono Color Blue,pinkwhite,greenyellow and orange