Features:<br />－The product is consist of 7pcs LEDs<br />－The light will be off when the vehicles stops， on when it rns， and flash when you are driving at night.<br />－Bring more color to your car.<br />－Bring more enjoyment to your drive.<br /><br />Specifications:<br />Powered by 3x AG10(=4.5V) button cell<br />Size: 77mm x 16mm<br /><br />PACKAGE INCLUDED:<br />1x Bicycling LED Light<br />3x AG10(=4.5V) button cell