Updated Version Omaker M3 Outdoor Sport Rugged Square Design SplashProof&Shockproof Portable Bluetooth Speaker Shower speaker with NFC Tap & Play Technology (Orange) Unique Rugged Square Design;With SplashProof&Shockproof functions,suitable for both outdoor and indoor exercise, especially for outdoor activities. No more Tangled Wires,enjoying high-quality stereo crystal clear sound with powerful deep bass system anywhere you want;Aux in function support all digital audio device with 3.5mm jack, such as iPod/iPhone/ipad,Cell phone,MP3, MP4,Computer, Notebook, PSP. Rechargeable built-in lithium battery offers up to Enjoy up to 8 hours of uninterrupted playtime with a single charge. NFC technology,built-in microphone can also be used as hand-free speakerphone; Reset key: in case of crash or power dead, please insert a pin into the reset hole before pressing the key lightly for system reset.