Specially optimized algorithm firmware enhances the hashrate to 411KH/s, increasing the probability of winning the lottery by 680% ( v2 only 55KH/s). The display turn off after 1 minute without operation, and you can wake up the screen by pressing any key to avoid light pollution. By double-clicking the USER key, allows you to switch to a desktop clock mode with the BTC Lottery runs in the background. ESP32-WROOM-32 Module, support Wi-Fi and BLE. Optimized Software that achieves a higher Harshrate of 411KH/s. 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. Master Chip: ESP32-WROOM-32 Wi-Fi: 802.11 b/g Bluetooth: Bluetooth LE: Bluetooth 4.2 Hardware Resource: UART, SPI, SDIO, , PWM, I2S, ADC Memory: 384KB ROM; 512KB ; 16KB RTC ; 8MB SiP Flash Interface: Type-C USB; GPIO: 22 Antenna Gain: Board Antenna, 2dBi (The product appearance and printed words depending on the batch, but this does not affect use) Colour:As Shown Material:PCB+Plastic Package Contents: 4 * Solo Lottery Miner 4 * USB Cable(The color of the data line is random, no specified color is accepted) 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.