Easy to carry：There is not much noise,simple, discrete and fun, also effective for focus and deep thought. Quality Gyro: Specialized finger gyroscope, gear linkage design, pure brass material, high quality, full of mechanical sense. Let go of your stress：Great for releasing anxiety, relaxing, staying awake, ADHD, ADD, autism and other attention disorder issues.Helps you calm down while stressful, kill you time while you are boring.