Sunshot Portable NFC Waterproof Super Bass Resonance Bluetooth Wireless Speaker With Power Bank Bluetooth CSR 4.0 Technology Compatible Outdoor Sport/ Climbing Stereo With Metal Snap Hook (Olive-green) NOTE: Sunshot-Tech is the only authorised seller for selling sunshot brand products on Amazon. Please recongnize the sunshot logo packing and selecte those sold by Sunshot-Tech. 2.0 sound track audio deliver rich and comfortable listening experience. Super bass and high-fidelity audio, enjoy the music at all frequency with pleasure. One-touch Bluetooth pairing with NFC,Bluetooth 4.0 and CSR chipset connects faster, more stable, compatible with all your Bluetooth-equipped devices. New 2 in 1 function.high capacity built-in polymer lithium battery can charge your phone simultaneously,The portability is endless and easy to take to anywhere. Good for outdoor sport/ climbing with metal snap hook Built-in noise reduction microphone for hands-free speakerphone use. Waterproof Dustproof and Shockproof,very durable rugged with rubberized covering and strong metal mesh.