①. Fashionable appearance, and convenient, can be carried out at any time indoors, no need for a venue. ②. The handle is designed according to ergonomic principles for a comfortable feel. ③. Spiral vibration devices are added on both sides, and the motion principle of dynamic inertia is adopted. ④. Through rhythmic back and forth vibration, it produces a vibration frequency that has a good effect on relaxing the human body. ⑤. The exercise time is short and the effect is quick. Only 6 minutes of aerobic exercise a day can achieve the effect of relieving neck discomfort, arms and beauty. ⑥. Colour: White ⑦. Material: plastic + iron ⑧. Package Contents:1 x dumbbell ⑨. Only the above package content, other products are not included. ⑩. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.