I call it D&B watch. It is a Deauther & Bad USB watch sold by Hamgeek. You can also call it deauther watch V4. You can look Deauther Watch V3 to
Programming a DSTIKE ESP8266 Smart Watch with Arduino IDE
MakerFocus WiFi Test Watch Tool ESP8266 : Programmable Development
AURSINC WiFi Deauther & Bad USB Watch V4 ESP8266 & Atmega32u4
WiFi Deauther & Bad USB Watch V4 ESP8266 & Atmega32u4 Programmable
Features: *The latest deauther watch V4 is flashed with the Leonardo bootloader, you can program it as bad usb directly. *Dual buttons (digital pins 9
Dstike D&B Wifi Watch (V4)Deauther & Bad Usb Esp8266 Atmega32U4 Ard Leonardo
LOT DSTIKE WiFi Deauther & Bad USB Watch V4: A…
Features: *The latest deauther watch V4 is flashed with the Leonardo bootloader, you can program it as bad usb directly. *Dual buttons (digital pins 9
Dstike D&B Wifi Watch (V4)Deauther & Bad USB ESP8266 Atmega32u4 Ard Leonardo
WiFi Test Watch Tool ESP8266 : Programmable Development WiFi
DSTIKE Watch V4 D&B Watch WiFi Deauther & Bad USB Watch ESP8266
DSTIKE V4 WiFi Deauther & Bad USB Watch ESP8266 & Atmega32u4