Auto mode allows the following 2-9 modes to be switched repeatedly in 15 seconds 2. strong chatter 3. Slightly stronger chatter in the middle gears 4. Weak with low intensity 5. Soft with a wave-like flutter every 1.5 seconds. Strong and weak waves can be alternated 6. Comfortable: a wave-like tremor every 1 second 7. Strong pounding at 0.5 second intervals 8. medium whack every 0.25 seconds source factory electric eye care instrument magnetic therapy eye massager intelligent vibration eye massager wholesale stock 9. Fast whack every 0.2 seconds Operation method 1. Turn on the power and press the key to enter the automatic cycle mode, in accordance with the order of the 9 programs automatically cut. 2. Press the function key to automatically switch to the next program 3. Press the time key, you can choose 3 minutes or 5 minutes of time timing