... .5x10cmBattery2 pcs x CR2032 Lithium batteries(included)Bulb2white led&2 red ledCan pass testROHS TestPacking details2pcs/blister card, 240sets ... White,black,yellow,green,blue,red.Custom color avaliable for big order.LED color:white,red,blue,green,colorfulPowered by CR2032 ... X35(H) Weight(g): 36/55Color: Red Safety Rear Light single LED,Super BrightConstant mode/Flashing modeSIZE:20mm-40mmUniversal ...