Specification: Origin: Mainland China Type: Module Condition: New The IO:bit is for Micro:bit's feature expansion mini-board that includes a micro buzzer. It is different from the generic expansion boards on the market and not just an IO adapter board. Specification: Size: 56*37*12MM/2.2x1.46x0.47inch  Net weight: 19g PCB board thickness: 1.6mm Note: Due to the different monitor and light effect, the actual color of the item might be slightly different from the color showed on the pictures. Thank you! Please allow 1-2cm measuring deviation due to manual measurement. Included: 1 x For Micro: Bit Expansion Board 1. High-Quality Craftsmanship: Crafted with a 1.6mm thick PCB board, this For Micro: Bit expansion board boasts exceptional craftsmanship, ensuring durability and reliability. 2. Plug-and-Play Compatibility: This For Microbit adapter plate is designed to be plug-and-play suitable for Micro:bit, allowing for seamless integration and ease of use. 3. for LEGO-Compatible Mounting Holes: Equipped with LEGO-compatible mounting holes, expansion board breakout adapter is suitable for KittenBot, providing enhanced versatility and expandability for your projects. 4. Built-in Miniature Buzzer: horizontal adapter board enjoy added functionality with the built-in miniature buzzer, allowing for audio feedback and notifications. 5. Satisfaction Guarantee: We strive to provide the highest standard of customer service to every customer to ensure you have a pleasant shopping experience. If you have any questions, queries or need help, please feel free to contact us.