S15 multifunctional 4-in-1 folding bike with 16 levels of magnetic resistance adjustment, providing a silky-smooth and whisper-quiet riding experience, you can tailor the workout to your fitness level and preferences, and making it the perfect choice for any home gym or apartment. The adjustable seat provides ergonomic support to help you maintain proper form and prevent discomfort or injury during your workout, ensuring a safe and effective workout every time. With the arm resistance bands, you can engage your upper body while working on your cardiovascular fitness, you can improve your posture and reduce tension in your shoulders and neck, giving you a more well-rounded workout. The S15 folding exercise bike can connect to the MERACH app via Bluetooth, enabling to track your workout progress and access additional features and content. And It's compatible with kinomap.