Portable Speaker Waterproof Wireless Sound With Dual USB Charge Out Speaker RechargeableSpeaker High Quality Speaker FEATURE: 1. Waterproof Dust-proof:The wireless Bluetooth speaker is made of special textile fabric materials, which protect the speaker against water, sweat, sand, dust and light rain. With IPX5 waterproof feature, you can out indoors or bring the party outside or on the go, enjoy music at any time. 2. Speakerphone function: supports speakerphone,built-in microphone,to bring clear calls for you,it is very perfect either with single or multiplayer for phone calls or video chat. 3. Pure music,perfect to enjoy:High-fidelity sound, stereo speakers,built-in resonance device ,equipped with high-efficiency amplifier,super-low-frequency dynamic,bass-rich,flexible,achieve a more shocking extremely overweight bass effect. 4. FM mode: FM automatic search and storage station, built-in FM radio module, can automatically search and store radio stations, saving time and effort. 5. Strong compatibility:By connecting multiple speakers supporting electronic devices to expand the listening experience, it is suitable for various digital devices such as MP3, MP4, mobile phones and computers. 6. Wireless transmission:wireless transmission technology, free from the constraints of cable, high-speed and stable data transmission, strong anti-interference performance, easy to think about music indoors and outdoors. SPECIFICATION: BT version:V3.0+EDR Signal-to-noise ratio:85db Transmission distance:10m Distortion:≤0.5% Output :4Ω5W capacity:400mAh Playtime:2-4 hours Charging time:2-4 hours PACKAGE INCLUDES: 1* speaker 1*USB cable 1* audio line a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a