Features:1. Handy size， lightweight for easy operation2. Bright outer shell， stylish and cute3. Plug and play， simply plug it into socket and it will start to work4. Good for promoting car's engine acceleration5. Make your driving more relaxing， ensure longer driving time and high performance Specifications:1. Color: Green2. Weight: 0.63oz / 18g3. Dimensions: (1.65 x 0.95 x 1.26)" / (4.2 x 2.4 x 3.2)cm(L x W x H)4. Applicable: Gasoline Car5. Function: Up to 15% Fuel Saving6. Model: ECO OBD2 Package Includes:1 x Economy Chip Tuning Box