Comfort Curve Plus™ Seat - Newly designed seat provides maximum comfort. Ratchet seat adjustment makes it easy for users to adjust the seat height, even while in a seated position. Performance Kit - Optional racing seat & racing pedals gives your cyclists the comfort of their road bike with the features & benefits of the new consoles. At-Your-Fingertips Resistance Controls - Allows users to easily adjust workout intensity. Seat Positioning - Precisely angled seat post allows users from 4' 9" to 6' 5" tall to adjust the seat height for correct Knee Over Pedal Spindle (KOPS) position to ensure proper lower-body mechanics, which reduces pressure on knees & enhances rider comfort. Optional XXL seat post & handlebars accommodate users up to 7' tall. Heart Rate Monitoring - Lifepulse™ digital heart rate monitoring hand sensors are conveniently placed on the handlebars, in both the upright & racing positions, to provide precise heart rate monitoring, & Polar® telemetry provides accurate, hands-free heart rate monitoring.DVD/CD/ Laptop Compatibility -Connect a DVD/CD player or laptop directly into the Attachable TV (requires additional external cord not supplied by Life Fitness). Motivating Workout Variety - Zone Training+™ workouts automatically adjust the resistance level to keep users in their target heart rate zone. Engage & Inspire consoles also include goal-based workouts, Fitness Test, & the machine-prompting Aerobics Trainer program to keep users motivated. Self-Powered Convenience* - Cordless, so you can place your bikes anywhere you want. * Models with Attachable TV require external power source.