Fangrui Product Details Specially Optimized Algorithm Firmware Enhances The Hashrate To 411kh/s, Increasing The Probability Of Winning The Lottery By (nerdminer 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, I2c, 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: 3 X Machine 3 X Usb Cable(the Color Of The Data Cable 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.