TONOR Mini Portable Mushroom Wireless Bluetooth Speaker for Ipad iPhone Android Windows Phone, Handsfree Call Answering Shower Speaker with Suction Cup,Black-12 months warranty Incredible sound quality in a small space saving speaker that fits in your hand Function Key:Volume +/-, Dial up/Hang up;Built-in Battery: 300mAH, Li-ion battery Built-in Microphone for hands-free conference calls when paired with your phone Portability: suction cup can attach to most smooth surfaces (even your phone!) and be used anywhere for convenient use Bluetooth wireless connectivity: Compatible with iPhone, iPad, and other Bluetooth-enabled cellphones, tablet PCs, computer, MP3 and MP4, etc.