1.Flywheel:7KGS,single-track 2.can test the percentage of body fat according to age,sex,height,weight ... -915U 2) Article name: magnetic fitness bike (for commerical use )3) main color: black and sliver N.W: 45 ... Display: time, speed, distance, pulse, calorie, and can test the percentage of body fat according to age, sex, height, weight6) ... factory! AMA-915U magnetic fitness bike (for commerical use )