Specially optimized algorithm firmware enhances the hashrate to 411KH/s, improving performance compared to similar devices. The display turns off after 1 minute without operation and can be reactivated by pressing any key to reduce light disturbance. Double-clicking the USER key allows switching to a desktop clock mode while BTC mining continues in the background. ESP32-WROOM-32 Module supports Wi-Fi and Bluetooth Low Energy. Optimized software achieves a hashrate of 411KH/s. Standalone operation: functions as a BTC miner directly over Wi-Fi without requiring an external computer. Embedded design: low maintenance, high availability, high reliability, and low power consumption. Supports both solo and pool mining configurations. ESP32-S3R8 MCU Wi-Fi microcontroller onboard. Master Chip: ESP32-WROOM-32 Wi-Fi: 802.11 b/g Bluetooth: Bluetooth LE, version 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 Product appearance and printed text may vary by batch; 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; specific colors cannot be requested) Only the items listed are included; other products are not included. Note: Lighting and display differences may cause slight variations in color between the image and the actual item. Measurement error allowance is +/- 1-3cm. Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.