The best value unit in the Lifespan lineup if you are going to supply your own desk. Solid treadmill designed for almost the entire workday.
With usage of 6 hours per day, our guess is this is going to be the core model for Lifespan. Keep in mind that treadmill desk machines typically have limited use. Top speeds are limited, there is no incline adjustment, and they aren't designed to have runners use the machine. With all that said, if you are wanting a treadmill desk for regular use, the TR1200 series is an excellent choice at an affordable price.