Note: Due to customs security inspection reason: 1.Products from China not contain battery. 2.Products from overseas warehouse may or may not contain battery,random delivery. Features: Remotely lock and unlock your car. Raise window output with LED indication light. With trunk release button. Remote car parking location finding. Flashing alert. Electric lock and air lock option. ACC test, auto lock & unlock your car. Universal, suitable for almost all car types. Specifications: Type: Keyle Entry System Main Unit Input Voltage: DC 12V 2V Working Current: 0.8mA Main Unit Frequency: appr. 433.92MHz Package Size: 13*9.5*6.5cm Package: 1 x Main Unit 2 x Remote Control 1 x LED Indication Light 1 x Connecting Wire 1 x English User Manual Dearbuyers,duetocustomslimitation,keysofthekitcannotcontainanybattery. Pleasepreparebatteriesyourselves. Batterymodel:CR2016 Eachkeyneeds2pcsbatteries,soonewholekitneeds4pcsbatteries.