Literally turn anything into a speaker. Powered by 2 triple As (included) This 1 watt speaker uses vibration to turn anything its attached to into a powerful speaker. All you have to do is plug it into the head phone jack of your music device, turn up the volume (pun intended hehe) and attach it to something big and preferably hollow. Each Tweaker comes with two suction pads to attach it to any device. This device carry’s a lot more bass than your traditional cellphone, computer or tablet speaker. However be aware, the size and shape of the device you attach it to will have a direct effect on the sound volume. Works best with an empty cereal or shoe box