ITEM NAME:2 in 1 WiFi Bluetooth CPU Module MINI KIT ESP32 Development Board Module #JT1 Product Description Description: Specifications: Small volume Adapt to the expansion board Board size: 39*30*5mm/1.54*1.18*0.19in Weight: 12g Notes: 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 Wireless WiFi Bluetooth Module.Included: 1 X Wireless WiFi Bluetooth Module. Board size: 39 30 5mm/1.54 1.18 0.19in. Adapt to the expansion board. Due to the different display and different light, the picture may not show the actual color of the item.