... . Bicycle use 5. USB flash Drives,Active speakers Flashlight LED support mp3, power bank, Electric torch:Description:1 ... to the machine.2.The machine has a Water-Resistance ,Machine can use in outdoor when it ... rain) But we must not put the machine into water ,so the machine may cause permanet damage .Head ... components must screw ,when the machine use of water-resistance.3.When the battery voltage is too ...