There are 4 sizes of cups to choose from: A cup/B cup/C cup/D cup Cup diameter: A cup 11.5cm, B cup 12.5cm, C cup 13.5cm, D cup 14.5cm [cup with silicone sleeve] Product accessories: 1. One host 2. Wireless remote control 3. One trachea 4. One USB cable 5. One current cable 6. Two inner cups Host: Time LED Display Timing function: time 5-30 minutes Breast Beauty 2 Modes 4 modes of electrotherapy Breast enhancement mode: 6 levels of intensity Electrotherapy mode: 8 levels of intensity Fixed-point button: chest positioning Emergency release button: press to quickly release air Features: 1. High-quality materials are environmentally friendly, safe, non-toxic and harmless to the skin. 2. The cup is designed to be easy to grasp and not easy to slip off. 3. The advantage of transparent cups is that you can see the part you use, the chest condition, and avoid redness. 4. Use the principle of vacuum negative pressure to quickly improve the size and shape of the breast without pain. 5. Can improve breast shape and cover nipple absorption. 6. The product micro-current (335 microampere low-level current), similar to bionics, can gently reach the bottom of the muscle. Through continuous deep and subtle muscle movement, the skin's firming energy is stimulated from the inside out.