Main Features:<br />Wireless control cycling alarm， simple to operate and easy to install<br />With infra-red remote controller， 10 meters sensing distance， up to 30 meters at open area<br />Anti-theft， perfect to protect your bicycle， moped<br />How to use:<br />Press A key to enter the armed state， press B key to cancel. The alarm sound will continue 20 seconds<br />Alarm power supply: 1 x 6F22 9V battery ( not included )<br />Remote controller power supply: 1 x 12V 23A alkaline cell ( included )<br /><br /><br /><br /><br /><br /><br /><br /><br />    Specifications<br />General<br />	 Model Number: YY610                                                  <br />                        For: Unisex                                                  <br />                        Type: Bike Bell                                                  <br />                        Material: Plastic + Electronic Components                                                  <br />                        Suitable for : Bike， Mountain Bicycle， Road Bike， Electrombile                                                	<br />Specifications<br />	 Power Source: 1 x 6F22 9V battery ( not included )                                                  <br />                        Color: Black                                                  <br />                        Condition: 100% New                                                	<br />Dimension and Weight<br />	  Product weight : 0.049 kg                                                  <br />                        Package weight : 0.131 kg                                                  <br />                        Product size (L x W x H)   : 9.5 x 6.3 x 3.8 cm / 3.73 x 2.48 x 1.49 inches                                                  <br />                        Package size (L x W x H)  : 12.5 x 6.5 x 11.5 cm / 4.91 x 2.55 x 4.52 inches                                                	<br />Package Contents<br />	 Package Contents: 1 x Alarm， 1 x Remote Controller， 4 x Screws， 2 x Nuts， 1 x Chinese-English User Manual                                                	<br /><br /><br /><br />                                                <br />