Wireless Speaker Featuring High Definition Bluetooth® 3.0 Technology | Simply Pair Your Device To Enjoy Dynamic Stereo Sound | Features High Definition Sound With A Built-In Microphone For Easy Hands-Free Calling | Mode Button Lets You Choose FM Radio, Hands-Free Phone Or Auxiliary Mode For Easy Connection To Almost Any Electronic Device | Adjustable Silicone Carrying Strap | Use Micro SD Slot For A Preset Playlist | Non-Slip Bottom | Perfect For Your Home, Office Or Outdoor Activities | Pairs From Up To 30 Feet Away | Up To 2 Hours Of Play Time