XUNJIE Red LED Bike Tail Light (2*AAA) Weight: 90 gram Volume:6cmx 3cm XUNJIE Red LED Bike Tail Light (2*AAA)SKU:S010025Specification:(1) Bulb: 3 super bright red LED(2) 4 modes for flashing(3) Battery Size:2 *AAAReference Pictures: XUNJIE Red LED Bike Tail Light (2*AAA)