Bluetooth Waterproof Speaker with built-in microphone and usb charging cable compatible with iphone galaxy sony ericsson and any smartphone (Black) Waterproof speaker with high definition Bluetooth 4.0 version consume less energy and increase the playtime up to 6 hours The speaker has a rechargeable lithium ion battery; So, you can expect the battery to recharge within 2 hours Rated as IP67 waterproof and dustproof; so you can use it at Shower, bathroom, pool, boat, car, beach, and outdoor Built-In Mic Hands Free Speakerphone pick up a call conveniently by this portable speaker anywhere when it is connected to your Smartphone Standby 10 minutes to improve saving energy; also has LED light to indicates the statues mode of the speaker