Does anyone know the specific features of Ondari Lifting?

Lately, I can noticeably see my jawline sagging, so I'm looking into dermatologists. ㅠㅠ I was shocked when I saw my photos ㅠㅠ

I have a bad memory of suffering from extreme heat and pain when I received high-frequency treatment in the past, so I became interested in On-Da Lifting, which is said to be less painful!! I looked it up and heard that the biggest feature of On-Da Lifting is that it uses microwaves to keep the skin surface cool while warming only the inside. I am curious if this is really true!!

Would someone like me, with thin skin, sensitivity to heat, and a severe crybaby, be able to endure the procedure comfortably with just numbing cream? If there are any distinct features of On-Da Lifting that I can definitely feel compared to other devices, I would be very grateful if those who have actually received the treatment could freely share genuine reviews or useful information; it would be a huge help in deciding on the procedure!