Features: 1.Built-in button battery, low power consumption, easy to replace. 2.The selling item is a new DIY remote key. Frequency 434MHz, with 7946 chip. 3.100% Complete with electronics, transponder chip and battery. 4.It comes with 3 buttons, which is very convenient for you. 5.Made of high quality ABS material, wear-resistant, durable. Specification: Features: Built-in button battery, low power consumption, easy to replace. The selling item is a new DIY remote key. Frequency 434MHz, with 7946 chip. 100% Complete with electronics, transponder chip and battery. It comes with 3 buttons, which is very convenient for you. Made of high quality ABS material, wear-resistant, durable. Specification: Condition: Brand New Color: Black Material: ABS Battery: Button Battery(Included) Button: 3 Button Frequency: 434MHz Fitment: Fit for Vauxhall Opel Vectra C 2002-2008 Fit for Vauxhall Opel Signum 2003-2008 Package List: 1 x Key Fob Package List: