Defi is a private label of Nippon Seiki which is a car instrument supplier. Their product line consists of Defi D-gauge, Defi Meter-link, Defi BF Impreial, Amber/White, Defi VSD Display & Control Unit V2. Defi is progressing to be the world number one manufacture and supplier for all gauges related products. The Defi products are developed by the comprehensive technology of Nippon Seiki. The brand name "Defi" is a French word meaning "Challenge." as Defi keep trying and evolving.