Bluetooth speaker can be wirelessly connected to Bluetooth devices such as smartphones, tablets and computers to playback any music collection stored on them. Thanks to its powerful battery, the system delivers powerful sound, separated from any mains supply, for up to 4-5 hours and is the perfect companion for you in the park, whilst camping or on the beach. Process control, can get rid of complicated connections and wiring distance constraints, users can enjoy high-quality music. Plug it in plug into Nirvana. Frequency Response: 180Hz-20KHz. A must-have handy accessory that lets you enjoy music while on the go. No matter where you are with this portable speaker you can groove in your favourite songs anywhere you want. It’s simple mechanism and portability gives you the flexibility that you were always looking for.The Microphone will allow you to make and receive Hands-free calls and listen to the other person loud through the speaker. If you are playing your music and a call comes in, the music will stop and you will hear your phone ring and will continue playing after your call has ended. COMPATIBILITY of BLUETOOTH with Your Kindle, Android Phones, Tablets, Cars and etc. with Bluetooth function can connect this pocket size Bluetooth speaker. PERFECT GIFT FOR YOUR KIDS, YOUR FAMILIES, YOUR FRIENDS AND YOURSELF! Ready to rock with this amazing small speaker