Led flash wristband,motion activated,water resistant(optional), over 100,000 flashes, sensitive to human movement, night time visibility up to 350m.2pcs 5050 led,45 degree, silicon wristband suitable for children or adult wearing, 2pcs CR-1200 Li battery, size 21*62mm(dia), weight 12.5g. Wrist band color can be R,G,Y,W,P,B,BK,PR...Can print customer logo.MOQ 1500pcs.