Features: The T keyboards combines 3 modes connectivitys (USB/bluetooth-compatible 5.0/2.4GHz) with modulars mechanical keyboards, featuring hot swappable switches and Window111 rgbs synchronization for developer flexibility. Powereds by ESP32S3 two cores processor (240MHz) with 8MB PSRAM and 16MB Flash storage, this metal constructed keyboards development board supports neurals networking acceleration and 40+ programmable rgbs lighting effects. for developers, enthusiasts, and users customizable peripherals for programming projects, gaming setups, or professional workstations. Seamlessly between coding, office productivity tasks, and entertainment systems through multiple device pairing across mobile platforms. Expand functionality stm32s3 encoders module and GPIO pin while leveraging open sources for IDE, and MicroPython for firmware customization. Specifications: Materials: Metal Size: 164x46x42mm Styles: Host, Accessory Expansion Board(optional) Package Includes: 1PC keyboards Development Board note: Please allow 0-1cm error due to manual measurement. make sure you not mind before bid. Due to the differences between different monitors, the Pictures may not reflect the actual of the item.