Welcome to the store! Integrated Bluetooth Function: This F405 mini flight controller board is equipped with an integrated Bluetooth module, enabling seamless and wireless adjustments. Connect your smartphone or tablet to easily configure your drone and optimize its performance without the need for cables or connectors. Powerful and Versatile Performance: Featuring a built-in 35A 4-in-1 ESC board, the flight controller supports 3-6S input voltage, ensuring maximum flight performance. It also offers increased flexibility and comes with adjustable voltage levels for more efficient drone operation. Compact Design for Enhanced Efficiency: With a 20x20mm design, this compact flight controller easily fits into your drone without adding excessive weight or bulk. This makes it an excellent choice for improving your drone's flight dynamics while maintaining its maneuverability and speed. Easy Installation and Durability: Designed with a plug-and-play interface, our drone flight controller ensures a simple and quick setup. Additionally, it is constructed from high-quality materials, ensuring maximum durability and a longer lifespan even under the most demanding flight conditions. Outstanding Support and Compatibility: Our F405 mini flight controller stack board is the perfect upgrade for your RC drone. It offers compatibility with multiple drone models, making this an ideal choice for both hobbyists and professional drone pilots. Note: Due to different production batches, the appearance is different, which does not affect the use. Color: Black Material: Metal Package Contents: 1 x Drone Stack Kit 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 to be slightly different from the real one. The allowed measurement error is +/- 1-3cm. Your satisfaction is our top priority. We will provide you with the best service. If you find any problems after receiving the product, such as damage, incorrect quantity, etc., please contact us immediately and we will provide you with the best solution!