Viper 500 ESP with security alarm. - Model: 500 ESP - Brand: Viper - Accessories: Remote control, wiring, manual, stickers - Features: Security alarm - Language: Japanese manual Bitwriter is sold separately (a device for changing settings). Purchased about 20 years ago. I tried to install it, but gave up. It has been stored in a warehouse. Please understand that this is an old item. Thank you for viewing.