Tested for Performance All keys include batteries and are electronically tested to ensure they're ready to go before we ship them out, so you know you're getting reliable support.Notice ProgrammingWe strongly recommend that you find a professional locksmith or dealer to program your keys. Key programming must have at least two usable keys to start programming, for example, if you add keys, then one original car key and one our key, if your car keys were all lost, then you need at least two of our keys to start programming. For the safety of your vehicle, we only provide uncut key blade, which you need to go to a local locksmith to cut.Compatibility Work For FCC ID: SY5HMFNA04, Frequency: 315MHZ. And compatible with 2012-2014 Accent, 2009-2014 Genesis(4Dr), 2011-2013 Sonata . Please check the original FCCID before purchase. For full complete list, please check our product description and the product appearance.Features 4 button car key, built-in chip,safe and reliable,sensitive response,signal will not be interfered.Small in size,light in weight,easy to carry,perfect for your car key. Beautiful and delicate