Feature:1. Enhanced Functionality: The WiFi programmable Watch V4 is a versatile WiFi testing tool and development board. Powered by the latest ESP8266 software, it allows for comprehensive security tests on your network.2. 3dB External Antenna: The V4 programmable watch is designed with a 3dB external antenna, improving signal detection and coverage for analyzing WiFi signals from a greater distance.3. Dual Capability: In addition to WiFi testing, the V4 serves as a Bad USB watch. Easily programmable, it can execute tasks like opening a cmd window or launching a notepad.4. 1000mAh Rechargeable Battery: This ESP8266 programmable watch has a larger 1000mAh battery, ensuring longer usage during WiFi testing and Bad USB tasks.5. Easy Programming: This ESP8266 smartwatch features an Atmega32u4 chip with bootloader for easy programming using for IDE. Open soldering pads allow for customization and additional component connection.Specification:Item Type: WiFi Programmable WatchMaterial: Acrylic, Printed Circuit BoardBattery: Polymer Lithium Ion Battery (Inbuilt), Capacity: 1000mAhPower Supply Port: 2 x Micro USB(Simultaneous Use is Not Recommended)Antenna: External 3dB AntennaStrap: Silicone StrapDesign: 3D ShellAtmega32u4: Added the Atmega32u4, Which Has Been Flushed Into for Boot Loader. You Can Program It Directly. Two Buttons (Numeric Pins 9 And 10) Can Be Used To Execute Different Commands. I Flashed A Demo Program. When The Usb Port Is Damaged And Connected To The PC, Pressing The DP9 Button Will Open The CMD Window. Press The DP10 Button And Notepad Will Open. You Can Reprogram It Through IDEBridge Plate: This Watch Has An Empty Bonding Pad On The Back. Welding Them To Connect The ESP8266 And The Atmega32u4. For Example, If You Weld The Iic Pad, The Watch Might Turn Into A Wifi Duck.Package List:1 xWiFi Programmable Watch1 x USB Cable1 x Cloth1 x User Manual1 x Storage BoxNote:The ESP8266 only supports 2.4GHz