This is a 190 Boost Buffer. I've used it for many years, and the jack was damaged during that time, so I had a friend who's a repairman fix the jack. It's likely a limited-edition color, and the serial number, which was only on limited-edition colors at the time, is 022. How about it for Ikuo fans or those looking for a high-quality buffer? Below is the Mercari template text: - Model Name: 190 Boost Buffer - Power: Powered by SPI - Design: Camouflage pattern - Control Knob: 1 knob - Connectors: 2 jacks Thank you for looking.