Description: 6IN1 Vacuum Ultrasonic Cavitation Lipo Body Slimming Machine US STOCK High Quality Advantage: automatic frequency tracking Automatic frequency tracking: It is used to track and lock a frequency when the 40K ultrasonic handle of the fat blasting instrument is working to achieve the best working effect. 40K work generally generates heat, and long-term work will cause the frequency of the 40K vibrator in the ultrasonic handle to shift, resulting in poor or even no atomization, which may easily lead to after-sales. The automatic frequency tracking technology searches for the frequency of the vibrator and locks it during the working period, so that the ultrasonic handle can work normally for a long time.