Bluetooth version: V5.0+EDR body color:black,red,green Signal to noise ratio: ≥85db Distortion rate: ≤1% Speaker specifications: 52mm*1 Use time: play at maximum volume for about three hours Transmission distance：Barrier-free 10-30mm battery capacity:1200MAH product size:18*8.5*5.1mm（with box） Function: IPX7, U disk, TF card,1+1 series Packing list: color box, bare metal, audio cable, charging cable, manual Waterproof level：IPX7