Breast Development: 1. Choose breast cup according to customer needs, connect the cup and aspirator socket. 2. Have the customer lie in a semi-reclined position to allow breast tissue to extend naturally. Cover the breast with a plastic cloth. Not recommended for individuals with inverted nipples. 3. Turn the air pressure knob to the highest setting in the cup, set the intensity knob to the lowest level, then press to select suction mode and adjust the rhythm knob to breast lift mode (or alternate between settings 1, 2, and breast lift as desired). 4. Place the cup over the breast, ensuring a close and secure contact between the skin and the cup. For individuals with asymmetrical breasts, it is recommended to use the device on the smaller breast side for five sessions before using on both sides simultaneously. 5. Gradually adjust the intensity knob from low to high, then adjust air pressure until a comfortable sensation is achieved. After 20 minutes, turn the air pressure knob to the highest point, set the intensity knob to the lowest level, then remove the cup and apply breast firming cream as desired. Specification Item Type: Vacuum Suction Cups Model Number: VL-JA099-22 Cup Size: 21 cm Rhythm Massage Treatment (Fingertip Moving): 1. Select the appropriate moving fingertip attachment and connect the cup to the suction port using the flexible tube. 2. Turn the air pressure knob to the highest setting in the cup, set the intensity knob to the lowest level, then power on and select the suction function. Adjust the rhythm knob to facial rhythm mode (or alternate between settings 1, 2, and facial rhythm I and II as desired). 3. Gradually adjust the intensity knob from low to high, then adjust air pressure until a comfortable sensation is achieved. 4. After 20 minutes, turn the air pressure knob to the highest point and set the intensity knob to the lowest level before removing the moving fingertip attachment. Color: Transparent Material: ABS Package Contents: 2 x Vacuum Stimulator Cups Note: The package includes only the items listed above. Other accessories shown are not included. Note: Lighting reflections and differences in display screens may cause slight variations in the color of the item as pictured. Measurement may vary by +/- 1-3 cm.