Specially optimized algorithm firmware enhances the hashrate to 377KH/s. 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 lottery runs in the background. ESP32-WROOM-32 module supports Wi-Fi and Bluetooth Low Energy. Optimized software achieves a higher hashrate of 377KH/s. Standalone operation: functions as a BTC lottery miner over Wi-Fi without requiring an external computer. Embedded design: low cost, low maintenance, high availability, high reliability, and low power consumption. Supports both solo and pool mining. ESP32-S3R8 MCU Wi-Fi microcontroller onboard. Master chip: ESP32-WROOM-32 Wi-Fi: 802.11 b/g Bluetooth: Bluetooth LE 4.2 Hardware resources: UART, SPI, SDIO, I2C, PWM, I2S, ADC Memory: 384KB ROM; 512KB RAM; 16KB SRAM; 8MB SiP Flash Interface: Type-C USB GPIO: 22 Antenna gain: Board antenna, 2dBi Color: As shown Material: PCB + Plastic Package contents: 1 x Solo Lottery Miner 1 x USB Cable (cable color may vary) Only the above items are included. Note: Light reflection and screen differences may cause slight variations in color. Measurement error allowed is +/- 1-3cm.