Sunny KeepFit adjustable mini stepper with arm muscle resistance bands

This is a compact fitness device that simulates stair climbing, often including resistance bands for an upper body workout. 

Features:

It typically has an LCD monitor to track metrics like step count, time, calories burned, and reps per minute. 

Benefits:

It offers a low-impact cardiovascular workout, strengthens and tones lower body muscles (calves, thighs, glutes), and can be used in small spaces or while seated.  

Considerations:

Look for models with sturdy construction and features that align with your fitness goals, such as included resistance bands for a full-body workout option.