Portable aluminum Bluetooh 4.0 Speaker (fully backward compatible) with up to 33ft/ 10m bluetooth signal, more than enough for bedroom, bathroom, lounge or kitchen. Compact size, incredible sound: Dual 5-watt precision-tuned drivers pump out surprising enhanced bass, enjoy rich, life-like and High-Def Sound. IPX5 water resistant speaker, the great companion for showers, baths, swimming pools, boats, marine, cars, etc. Built-in 1800mAh rechargeable Lithium Ion battery offers up to 15 hours of play time. Built-in high sensitivity Microphone, hand-free telephone calls. Wireless and wired connection as you like; Compatible with all Bluetooth-enabled devices and non-Bluetooth devices via 3.5mm audio cable; Automatical connection next time without hassle.