Main Features:<br />The cycling tail light is used for outdoor cycling <br />Water resistant function， no need to worry about light rain <br />With 7 flashing modes， it including normally on， quick flashing， slow flashing， left to right slow flashing， right to left slow flashing， left to right quick flashing， back and forth flashing between left and right <br />2 modes laser parallel lines， including normally on and flashing  <br />Powered by 2 x AAA battery (removable， included in the package)， it can work for 9 - 36 hours <br />Input power: 100mW<br />Seat post: 20 - 36mm<br /><br />    Specifications<br />General<br />	 Color: Black                                                  <br />                        Suitable for: Fixed Gear Bicycle， Electric Bicycle， Road Bike， Cross-Country Cycling， Touring Bicycle， Mountain Bicycle                                                  <br />                        Placement: Tail                                                	<br />Parameters<br />	 LED Quantity: 5                                                  <br />                        Power Supply: 2 x AAA Battery                                                  <br />                        Working Time: 9 - 36 hours                                                	<br />Basic Information<br />	 Product Weight: 0.044 kg                                                  <br />                        Packge Weight: 0.109 kg                                                  <br />                        Product Dimension: 8.0 x 7.5 x 3.0 cm / 3.14 x 2.95 x 1.18 inches                                                  <br />                        Package Dimension: 10.5 x 7.0 x 4.0 cm / 4.13 x 2.75 x 1.57 inches                                                	<br />Package<br />	 Package Contents: 1 x Cycling Laser Tail Light， 1 x Fixed Base， 2 x AAA Battery                                                	<br /><br /><br /><br />                                            <br /><br /><br /><br /><br /><br /><br /><br /><br />                                                <br />