The Autowave BMW EWS Diamond Remote Key HU58 is a modern vehicle key designed for central locking and other features like headlights. It includes a PCF7935 Transponder, an original NXP Chip, and features 3 buttons for lock, unlock, and boot functions. The key operates at a frequency of 433MHz. This product is from Autowave, a brand with over 10 years of experience in the automotive business, offering OE quality and specifications. It is shipped from the UK with a 60-day returns policy. Always check this product is correct for your vehicle before purchase.