- Ergonomic Design: Experience enhanced comfort during long flight sessions with our unique ergonomic design that fits comfortably in your hand, reducing fatigue and improving your control. - Convenient Battery Compartment: The built-in battery compartment fits 1.5 V/AA batteries (not included), making it easy to access and replace batteries whenever necessary, so you can stay focused on flying. - Optimal Switch Placement: Our thoughtfully designed switch placement ensures seamless operation, allowing for precise control without sacrificing performance in critical moments. - Broad Compatibility: This controller is compatible with RC helicopter models XK k120, K110, K130, and K110S, making it a versatile choice for diverse flying enthusiasts. Use Scenarios: - Perfect for both beginners and seasoned pilots looking for a reliable, user-friendly controller that enhances flight experience. - Ideal for hobbyists who fly for extended periods, providing an ergonomic grip that minimizes discomfort. - A practical choice for attending RC events or competitions, where quick battery changes and precision control are essential for success.