- Flash Wheel Light for car、 motorcycle、 bike<br />- On、 Off switch included and 7 difficult effects<br />- Compact design and lightweight High intensity light increases visibility at night for safety<br />- Makes impressive effects which vary with wheel speed -- all the way up to full motion circle<br />- 6*LR1130 batteries included (replaceable)<br />                                                                                                                                Dimensions: 3.74 in x 0.51 in x 0.51 in<br />Weight: 1.46 oz