Sunshot CK207 Waterproof Wireless Bluetooth Speaker. Rugged Shockproof and Waterproof Portable Wireless Speaker. [IPX6 Waterproof, IP6 dustproof, Shockproof] Repeatedly coating waterproof rubber rensin, durable rugged with rubberized covering and strong metal mesh is perfect for showers, bathroom, pool, boat, car, beach, indoor, outdoor activities & extreme sports. (IPX6 water resistant level: water will not be into the interior by water injection in any direction directly.) [CSR4.0+EDR & DSP Control] CSR 4.0 + EDR (Enhanced data rate)Technology high compatibility to pair with your smart device connects faster, more stable. DSP chip (Digital Signal Processing), it performs well in various environments, offers a more enjoyable listening experience, operate preset smartphone EQs or short press power key for mode change. [Premium Sound with Bass Enhance Technology & 3 Modes for playing music] Two powerful 30mm drivers deliver crisp clean sound with deep bass. Speaker can be easily connected with your smart device; 3.5mm AUX port for line in quickly play with external audio device e.g. an MP3 player; built-in TF card reader for playing music of your TF card. [Built-in Speakerphone ] Built-in high definition microphone for hands-free speaker phone calling, easy to pick up phone, simply to reject a coming call or redial your lastest outgoing call of your recents. [High capacity rechargeable battery & portable design] Built-in Li-ion 2200mAh Rechargeable Battery for up to 10 hours of playtime; Speaker comes with a metal snap hook for your back bag and perfect for carrying it out. Bluetooth Mode: play music, control volume and next/pre song, Hands free function: dial the last phone call or answer the coming call. TF Mode:plug a TF card you can easily play music anywhere and anytime. AUX In Mode: pay music from PM3,CD or smart phone ect. with an 3.5MM audio cable. Charging Reminding: &#034;Dudu&#034;sound from the speaker means the power is low.