HKWX Silicone Suction Mini Mushroom Wireless Bluetooth Speaker with Microphone, Blue Incredible sound quality in a small space saving speaker that fits in your hand. Built-in Microphone for hands-free conference calls when paired with your phone. It has a built-in rechargeable battery that lasts 5 to 7 hours and comes with a USB plug and cable. Portability: suction cup can attach to most smooth surfaces (even your phone!) and be used anywhere for convenient use. Bluetooth wireless connectivity: Pairs with any Bluetooth device (smartphone, tablet, etc.) and streams great quality audio!