Bluetooth V2.1 Technology. Enjoy Hands-Free Calls with Built-in Microphone. Connect and Stream AudiO from MP3 Players, Smartphones, Tablets, PC, etc. Compatible with other Bluetooth-Enabled devices. AUX Input allows you tO connect your device directly with the included 3.5mm cable. IP-47 Waterproof and Dustproof Construction. StereO Speaker Sound and Bass Output. Control Volume and Song Selection Wirelessly. Powered by 4 x AA Batteries (not included). Optional Power: DC 5V USB Cable Included. Battery Life Provides Up tO 15 Hour Playing Time. 10 Meter Max Bluetooth Streaming Range. Touch Button Control Operation. Glossy UV Surface Treatment. Fold-Out Stand and Carry Handle. Dimensions: 7.8"Lx 1.8"Wx 3.5"H.