for ESP32 development board comes with positioning module 2.8-inch screen for ESP32 Predator Predator has been upgraded to the latest firmware 1.7.2, small and cute, it is simply a collectible The product adopts 3D shell design with a variety of color options. In addition, it also provides a card slot, port, GPS positioning, 4LED power display, and the hardware has also updated the latest functions. The small body can hold a 500mAh battery, which has a stronger battery life. And the holes are precisely opened with tight seams, and the internal workmanship is neat. Simply put, it is some common WiFi functions + GPS no positioning, acquisition time, etc. It is recommended to learn about the Predator online first Size: 8.8cmx5.9cmx1.5cm (antenna is about 8cm) Scope of application: 2.4GhzWiFi, Bluetooth, GPS Screen: 2.8-inch touch screen, resistive screen, the screen will be white when switching, please dont shoot if you mind External antenna: GPS antenna is 20dBi 8cm antenna 2.4G antenna is 8dBi 8cm antenna Others: Since the product is handmade by individuals, there may be some defects, but normal function is guaranteed.