... Heads ultrasonic slimming machine N8+2 ( RF+vacuum Roller +near infrared laser + cavitation) Product DescriptionEnergy level: 09, radio frequency: 08s ... radio frequency, near infrared laser, endermologle, pulse mechanical tissue manipulation;The safety and effectiveness of the technology and of the N8 ... 0~7. 5s RF interval: 0. 5s Wave length of infrared ray: 940nm Power: 0W,4W,6W,8W,10W,12W,14W ...