This device not only helps to develop muscles but also improves blood circulation. The high-frequency vibrating wave can efficiently target areas with excess fat. Two-way massaging belts can cover two body areas at once or allow two users to exercise at the same time. With a patented 5-speed system, it meets the requirements of all ages to choose either the massaging or body slimming effect. Patented 5-speed system Unique vibrating spiral waves stimulate circulation to help promote toning, firming, smoothing and strengthening of problem areas Economical for 2 person usage Includes two belts (with one adjustable) – Note that the belts are blue with a red stripe Multi-functional two-way massaging belts can cover two body areas at once More than 40 belt positions and adjustments to get a full body workout MODEL NO - UC-633A