The Z50 Multimedia Mini Speaker produces 10 watts peak power for surprisingly loud sound. Connect to multiple devices, such as your smartphone, tablet or laptop for a bigger driver, better sound. The 2.25" driver produces 5 watts of power for a superior, loud sound. The compact single-driver speaker is portable. Move from room to room and play your multimedia. The 3.5mm audio line-in allows you to connect and listen to your favorite multimedia from multiple devices. Designed for plug-and-play simplicity, this speaker is easy to set up. Simply plug in the speaker, and you are ready to go. The mini speaker uses an AC power supply so there is no need to ever recharge it.