Devices descending from K031611
5 later devices reach P4-Fitness through their predicates, nearest generation first.
| Generation | Number | Device | Applicant | Decided | Own descendants | Recalls |
|---|---|---|---|---|---|---|
| +1 | K111476 | Contour Technology Muscle Stimulator | Contour Technology | 2012 | 4 | — |
| +2 | K142055 | Gymform Abs & Core | Well Brain International, Ltd. | 2015 | 1 | — |
| +2 | K130074 | Gymform Abs-a-Round | Well Brain International, Ltd. | 2013 | 3 | — |
| +3 | K202653 | Gymform Total ABS | Well Brain International, Ltd. | 2021 | 0 | — |
| +3 | K181728 | Muscle Trainer | Shenzhen Kentro Medical Electronics Co., Ltd. | 2018 | 0 | — |