MND waterproof Bluetooth 4.0 speakers Portable Wireless Speaker Bass Subwoofer Sound Speaker Power Bank/ Mic / NFC Function for Outdoor Bicycle Cycling Climbing Camping Hiking Running CSR4.0 + EDR bluetooth version lead the more fast connection and more long play time.The 800mAh built-in Li-Polymer battery enhanced the long wireless playtime, perfect using in outdoor time. Stereo crystal sound with 3W driver makes the incredible audio performance,high definition with more than 90db SNR boost your listening experience. Further more,5W NCN IC application build loud sound pressure,full power,no MNR,lead to enjoy your theater time! The IPX5 waterproof level make sure your best enjoying on hiking, sporting,traveling and on beach as well! A touch friendly silicone cover, more safe when dropped or falling down,so safe and surf! A fool connecting way by NFC(Near Field Communication), scan the speakers by phone, connect in half second,play your music on the way right now! An artistic design type,fully portable only could be placed indoor, but also could be hold in your palm ,hook at bag or bicycle,which enable to enjoy your time outdoor!