Specially optimized algorithm firmware enhances the hashrate to 411KH/s, improving performance compared to previous models. The display turns off after 1 minute without operation and can be reactivated by pressing any key to reduce light pollution. Double-clicking the USER key allows switching to desktop clock mode while BTC mining continues in the background. ESP32-WROOM-32 Module supports Wi-Fi and BLE connectivity. Optimized software achieves a higher hashrate of 411KH/s. Standalone design: operates as a BTC lottery miner directly over Wi-Fi without requiring an external computer. Embedded system: low maintenance, high availability, high reliability, and low power consumption. Supports versatile mining options including solo and pool mining. Features ESP32-S3R8 MCU Wi-Fi microcontroller on board. Main chip: ESP32-WROOM-32 Wi-Fi: 802.11 b/g/n Bluetooth: Bluetooth LE 4.2 Hardware resources: UART, SPI, SDIO, I2C, PWM, I2S, ADC Memory: 384KB ROM; 512KB SRAM; 16KB RTC SRAM; 8MB SiP Flash Interface: Type-C USB GPIO: 22 Antenna gain: Board antenna, 2dBi Product appearance and printed text may vary slightly by batch, but this does not affect functionality. Color: As shown Material: PCB + Plastic Package Contents: 2 x Solo Lottery Miner 2 x USB Cable (cable color is random and cannot be specified) Only the items listed are included; other accessories are not included. Note: Lighting and screen differences may cause slight variations in color between the image and the actual item. Measurement tolerance is +/- 1-3cm.