Equipped with a suction cup and the detachable metal hook, it is easy to attach in shower wall, tiles and mirrors, and you can also use the hook to hang the portable speaker on the backpack when hiking. Waterproof shower speaker is compatible with all Bluetooth devices, phone, computers and even Echo series. Bluetooth ensures instant pairing for waterproof speaker and maintains a strong connection up to 33 ft.Built-in microphone provides crystal clear hands-free call in occasions of showering, cooking, hiking, kayaking and etc.