1. Modern acoustics structure and dual loudspeaker provide high tone quality2. Built-in high sensitivity microphone reduces noise automatically and offer clearly communication3. Built-in 2200mAh power offers longer service time4. Brightness LED light、 made of environmental friendly material and energy-saving bulb、 irradiates up to 50 meters.5. Added holder for bicycle apply to various models bikes6. Support FM function7. Exquisite appearance with wear-resisting、 anti-skid materialParameter:Loudspeaker Output Power : 3wFrequency range: 56ef863656374155028c038aSNR : －80dB Bluetooth Transmission distance: 10mSupport MP3、 WAV music playerFM radio (88~108MHz)Flashlight、 support SOS functionUSB charger/ output 5V 1ACharging : Integrated intelligent charging Circuit protection: dischargingPower bank capacity :2200nAhSize・18.6*10.6*4.6cmSpecification: 152*35.6mmNet weight: 113 gGross weight: 228.5gPacking List:1 x Flashlight1 x USB cable1 x Holder1 x Chinese & English Manua