Main Features:<br />High quality super bright bicycle light<br />Can be installed in seat tube or back vent<br />Humanized design makes riding at night more safe<br />Work by 2 AAA batteries (not included)<br /><br />    Specifications<br />Specification<br />  Special function  : Safety Laser Taillight                                                  <br />                        Product weight   : 0.100 kg                                                  <br />                        Package weight   : 0.120 kg                                                  <br />                        Product size (L x W x H)  : 8 x 7 x 3 cm / 3.14 x 2.7 x 1.18 inches                                                  <br />                        Package size (L x W x H)  : 11.5 x 8 x 5 cm                                                  <br />                        Package Contents: 1 x Bike Laser Taillight￡? 1 x Holder                                                 <br /><br /><br /><br />                                                <br />