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Duty Cycle 15, 50,100 Hz. Best ultrasound therapy machine 1 mhz ultrasonic delta 07 fnd unit machine unit which reach to customer within 6-10 days. The seller is deltabeautyshop and is located in New Delhi, DL. Professional use Ultrasound therapy device 1 Mhz Frequency. Therapeutic Ultrasound provides therapeutic deep heat treatment for Relaxation Reduce swelling and inflammation.