Specially ESP32-S3R8 MCU, support Wi-Fi and BLE. Optimized Software that achieves a higher Harshrate of 117KH/s. Computing Power increases by 60% more than other boards from , which means 60% more chances of winning. Standalone: can work as a BTC lottery miner directly over WiFi. No External computer is needed. Embedded: low cost, low maintenance, high availability, high reliability, low power. Versatile: solo/pool mining. ESP32-S3R8 MCU wifi microcontroller on board. (Due to different product batches, the appearance , which does not affect the use) Colour:As Shown Material:PC+Plastic Package Contents: 4 x Display Kit(T190 No LoRa ) Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.