Neck massager with 3-level height adjustment. - Usage time: Usable for 10 minutes per session - Target areas: Neck, back, waist, pelvis, abdomen - Level adjustment: 3-level height adjustment available - Number of levels: Settings for level 1, level 2, and level 3 - Design: Ergonomic design 3-stage, step-by-step turtle neck care that stretches properly to fit your neck, not a fixed height. Stimulates the neck and surrounding muscles in 10 minutes per session. A product developed by a medical device manufacturing company with an ergonomic 3D design! [Moreover,] with just one, you can thoroughly care for your muscles by using it not only for smartphone neck but also for shoulders, waist, pelvis, and abdomen! Thank you for viewing.