Advantage:Can match with all kinds of carsEasy to install and to detachCompatibility with smart keys and car alarm systemNote:1.To keep the car in safe, remote start/stop function is not available when the hand brake be released.2.Can not remote start/stop the engine when the car is out of the key control distance.3.After engine being remote started ,it will be stopped if no one operate the car in 15 minutes4.In very cold winter , when short pre can not start engine, please long pre button for 3 seconds. Features: 1,One Button Start:Stepped on the foot brake,pre the button shortly.No need use the original car key.2,One Button Stop:Pre the button shortly.3,Remote Start:Pre unlock key for 3 times in 5 seconds.4,Remote Stop:Pre unlock key for 3 times in 5 seconds.5,ACC,On,OFF:Don't step on the foot brake, pre the button shortly.6,Auto Lock:System will lock car doors automatically after the car be started/stopedparameter:Product weight: 0.11 kgPackage weight: 0.35 kgProduct size (L x W x H): 8.70 x 8.50 x 3.00 cm / 3.43 x 3.35 x 1.18 inchesPackage size (L x W x H): 17 x 14 x 5 cm / 6.69 x 5.51 x 1.97 inchesPackage Contents:1 x Car Engine Push Starter Host, 1 x Push Start Stop Button (1m Cable Length), 2 x Wire (0.6m / 1m), 1 x English User ManualDearbuyers,duetocustomslimitation,keysofthekitcannotcontainanybattery.Pleasepreparebatteriesyourselves.Batterymodel:CR2032Eachkeyneeds1pcsbatteries,soonewholekitneeds2pcsbatteries.