Cubii JR2 Seated Under Desk Elliptical Machine. Get Fit While You Sit. The Cubii JR2 is built to have an accessible cardio workout that activates six key muscle groups. The built-in digital display monitor tracks your active time, calories burned, distance and RPM's. Customize your own workout with the 8 levels of increasing resistance. Just used 3 times by my 97 yr old Mom