ITEM NAME:D1 Mini Fully Functional WIFI Internet of Things Development Board Breadboard Product Description Description: Specifications: Name: D1 Mini double-sided breadboard Colour: Blue Size: 55mm*35mm/2.16*1.37'' Weight: 9g Note: Please allow 1-3mm differs due to manual measurement. Due to the different display and different light, the picture may not show the actual color of the item. Thanks for your understanding. Included: 1 X D1 Mini WIFI Internet of Things Development Board.Due to the different display and different light, the picture may not show the actual color of the item. If item is defective after 3 months, you can still send it back to us. We will send you a new one after receiving the defective item.