Speaker Bluetooth M16 5W*2 Radio Outdoor Waterproof Dustproof Shockproof5Wx2 professional suitable for outdoor useBluetooth speakerwaterproof, dustproof, shockproofbluetooth 4.0High quality battery with capacity 2200mAh with long playing time, 5 hours at high volumeand standby time 22 days2.0 surround soundSupports FM functionFeature  (1) Can play music with connection to mobile phone, MP3, MP4, PC, IPOD and other devices if the equipment has a 3.5 mm socket  (2) Suitable as a gift. Pocket size. Easy to take with you.  (3) Charging indicator  (4) Blue tooth connection to PC, Mobile, IPOD and so on  (5) Microphone function  (6) Support TF card function(7) Supports FM functionTechnical specificationWorking voltage:          3.7VInput  power:                  DC5V   500mAFrequency:                  50Hz——18KHzSignal&noise ratio:   >=90dBDistortion degree:          <=1%          Speaker Unit:           40mm  3? 5W*2Dimensions:                  180*60*60mmBattery capacity:           2200mAhWeight:                            358gCase Material:           ABS plasticAccessories Manual: 1pc                    Charging cable: 1pc                    Audio cable: 1 pc