The World's Best-Selling Rowing Machine The dependable performance of the Concept2 Model D Indoor Rower has made it the best-selling rowing machine in the world for over 40 years. Used by elite athletes for competitive training, the versatile Model D fits in as well in fitness facilities and home gyms as it does in boathouses around the world. The Model D fits your goals and your budget, offering a low-impact exercise accessible to anyone of any age. For over forty years, Concept2 has been designing and manufacturing innovative, high-quality products out of Morrisville, Vermont. Included with your Purchase: Performance Monitor 5 computer, Model D User Manual, Performance Monitor Quick Start Guide, tools and illustrated assembly instructions. Warranty: Limited 2-year warranty included. Trust Your Workout Data - Measure your progress with reliable, comparable data on every stroke. - Workout options include time, distance and intervals. - Easy on your eyes with backlit LCD display. - Wireless Bluetooth and ANT+ compatibility for heart rate monitoring or apps. - Save workouts to a USB flash drive (not included). - Games included, and more. Control Your Workout Intensity - Air-resistance flywheel responds to every stroke. - Control the air flow with an easy change of the damper. - Damper levels 1-10. - Minimal noise. - Smooth feel. Easy to Assemble, Move and Store - Easy to assemble with only 8 screws. - Rolls smoothly on caster wheels while fully assembled. - Separates into two pieces for storage. - Releases quickly without tools using a framelock mechanism. - Stored dimensions: 25 in x 33 in x 54 in (63.5 cm x 83.8 cm x 137.2 cm). Stay Motivated - Connects with a wide range of popular fitness apps. - Free ErgData app records and stores workouts on your smartphone. - Sign up for Concept2's Workout Of the Day (WOD) emails. - Join an Online Challenge. - Online rankings allow you to compare yourself against others.