ITEM NAME:For WEMOS Mini Breakout 5V 3.3V CH340G USB to Serial Adapter Module Board Product Description Description: Specification: Colour: Black Dimension: 23mm*12mm*4mm/0.9*0.47*0.15'' Weight: 3g 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 USB to Serial Adapter Module.Included: 1 x USB to Serial Adapter Module. 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.