1、AUTO RALLY TECHNOLOGY: The abdominal wheel utilizes auto rebound technology to provide an efficient and controlled exercise experience, allowing you to get a more intense workout. 2、TIMER FUNCTION: The abdominal wheel is equipped with a digital timer, which makes it easy for you to evaluate the duration of your workout or set goals for continued exercise, helping you to push yourself and better manage your training progress. 3、DURABLE MATERIAL CONSTRUCTION: The abdominal wheel is constructed with durable PP, metal and EVA materials, elbow support and curved handles are designed to avoid injuries and effectively protect your arms, neck and spine, so that you can feel more comfortable and safe to use it during your training. 4、PRACTICAL DOUBLE WHEEL DESIGN: The abdominal wheel is designed with double wheels, which can move smoothly and prevent the wheels from slipping. Unlike other dual wheel AB rollers, we added thickened rubber tracks on the wheels to reduce friction on the floor, which is not only quieter but also protects the floor from damage. 5、EXERCISE YOUR WHOLE BODY: The wider double wheel design (10cm) of the abdominal wheel is stable and ergonomic, not only strengthens your abdominal muscles, but also works out your back, arm, chest, and shoulder muscles, improving the strength and definition of all parts of your body in every way. 6、EASY DISASSEMBLY: The handles of the abdominal wheel are easy to remove or install, making it more convenient to use, perfect for beginners and advanced athletes. Item Type: Abdominal Exercise Roller Material: PP, Metal, EVA Weight: Approx. 1880g / 66.3oz Battery Type: Button Cell (Built In) Battery Capacity: 60mah Applicable Gender: Unisex, Male, Female 1 x Abdominal Wheel 1 x Timer 1 x Armrests 2 x EVA Foam 1 x Kneeling Mat