About this item High definition Bluetooth 4.0 audio wireless connectivity with seamless streaming and 6 hours of playtime. Universal compatibility with Android and iPhone tablets, smartphones, iPods, MP3, MP4 and other Bluetooth enabled digital players. Easy access to hands-free talking, volume control, fast forward, backward, pause, play, and power buttons. Water resistant loudspeaker and built-in mic for both outdoor and indoor use. Don't let water stop you from enjoying your favorite music; an excellent companion for the beach, poolside, on a boat, in the shower, bathtub, or kitchen. Size: 3.5'D x 3.5'W x 2.3'H