Compatible with FCC IDM3N-40821302. This keychain replacement is compatible with Chrysler 300, Dodge Charger 2011-2018, Challenger 2015-2018, Dart 2014-2016. Frequency: 433MHz. Precise replacement. A complete key including chip, battery, internal electronics, and ready to be programmed. Programming instructions are not available. Professional programming by a locksmith is recommended. The uncut blank key must be cut by a local locksmith. Check compatibility before ordering to ensure it matches your existing key fob. This is a non-OEM product and sold as an accessory only. Package includes: 1 x Car Keyless Entry Remote (battery included). 100% satisfaction guaranteed within 90 days: if the remote does not work for any reason, for a refund or replacement. Full functionality matches original OEM keys with strong signal transmission. Made from durable materials with professional craftsmanship. Each unit undergoes strict quality inspection. Verify compatibility carefully before purchase.