Type:Automatic Rebound AB Roller, Exercise Wheel, Abdominal Wheel, Anti Slip Fitness Wheel, Elbow Support Automatic Rebound Abdominal Wheel, Ab Roller for Abdominal Exercise Machine, Core Strengthening Trainer Fitness Belly Training, Ab Roller With durable construction, comfortable handles, and smooth-rolling wheels, making it ideal for workouts aimed at enhancing abdominal strength and overall fitness. Features: 6th generation full LCD screen, clearly shows time and battery level. Built-in phone stand, can hold a tablet for watching videos while exercising. Can track time, count, and calculate calories with one-click switching. Built-in battery, lasts for 15 days on a single charge, charges with a Type-C charger. Built-in brake function, powerful rebound assistance, automatic security braking. Ergonomic design, wing-shaped appearance for easy use. Silent operation, does not disturb others. Thickened padding, prevents arm pressure. Widened wheels, supports up to 200 pounds. You will receive a kneeling pad with a random color. Specification: Material: ABS, TPR, Stainless Steel Battery Type: 1 x 200mAh Lithium Battery Power Supply Method: USB Charging Cable Power Supply ( Power Adaptor Not Included ) Size: Exercise Wheel(LxW): 31 x 46.5 cm Kneeling Pad(LxWxH): 28 x 18 x 3 cm Package Contents: 1 x Exercise Wheel 1 x Kneeling Pad 1 x Type-C Cable 1 x Manual Please Note: Due to manual measurement, there might be a tolerance in the product size. Due to the lighting effects and shooting angles, the color of the item and that shown in the picture might have a nuance.