Portable and Convenient: Elevate your learning and gaming experience with this compact wireless Bluetooth controller, perfectly integrated with the Anki app. Designed for students, doctors, and gamers, its sensitive control keys ensure minimal time waste, offering unmatched convenience and efficiency. Its compact size makes it an ideal companion for those on the go. Multi-Platform Compatibility: This versatile controller is compatible with a wide range of platforms, including Switch, Windows, Android, OS X, and iOS. Measuring just 2.9 x 1.4 inches, it easily fits in your pocket, making it the perfect portable accessory to enhance your Anki app experience wherever you are. Seamless Pairing: Enjoy effortless connectivity with wireless Bluetooth technology, allowing you to switch seamlessly among four modes: Switch, X input, Mac, and keyboard mode. Each mode features unique connection methods and indicator light displays. Simply long press the "Home + A/B/X/Y" button combination to connect to your desired mode with ease. 14 Cool RGB Lighting Modes: Customize your environment with 15 independent LED lights offering 8 vibrant colors, including red, yellow, blue, and green. Choose from 14 RGB lighting effects, featuring 8 static and 6 dynamic options, easily adjustable using the light buttons and "A/B/X/Y" keys. Create an immersive learning or gaming atmosphere tailored to your preferences. Long Battery Life: Equipped with a high-performance 200mAh lithium-ion battery, this controller ensures up to 4 to 8 hours of continuous gaming time in RGB lighting mode. Features like auto sleep, charging alert, and low voltage warning functions guarantee uninterrupted entertainment, keeping you in the game longer.