Description:<br />BIKEMAN backpack allows cyclists to trigger variety displays including indicators， stop signal and even their own customized messages to remind particularly irritating drivers. It escorts your safety no matter in terrible weather or at night. Suitable for cycling at night， trekking， hiking， etc<br /><br />Main Features:<br />Bag capacity: 5L<br />Frequency of wireless: 2.4GHZ  <br />Controlling distance: 3m  <br />Transmitter battery: 2 x CR2032  <br />Transmitter shell material: ABS  <br />Transmitter waterproof grade: IPX-5  <br />Receiver battery: 3.7V， 600mAh lithium battery ( working for about 24 hours - full charged )<br /><br /><br /><br /><br /><br /><br />    Specifications<br />General<br />	 Type: Backpack                                                  <br />                        For: Hiking， Camping， Cycling， Travel                                                  <br />                        Material: Polyester， Nylon                                                  <br />                        Color: Green， Orange                                                	<br />Specifications<br />	 Product weight   : 0.365 kg                                                  <br />                        Package weight   : 0.420 kg                                                  <br />                        Product size (L x W x H)   : 37.0 x 22.0 x 7.5 cm / 14.54 x 8.65 x 2.95 inches                                                  <br />                        Package size (L x W x H)  : 39.0 x 24.0 x 9.0 cm / 15.33 x 9.43 x 3.54 inches                                                	<br />Package Contents<br />	 Package Contents: 1 x Backpack， 1 x Remote Controller， 1 x Charger， 1 x USB Cable， 1 x English User Manual                                                	<br /><br /><br /><br />                                            <br /><br /><br /><br /><br /><br /><br /><br /><br /><br />                                                <br />