The CT850ENT features a modern 15.6" touchscreen display and electronics package that allows you to watch TV, browse the web, and stream their favorite music. Preset programs include a wide variety of popular workouts for the average user while fitness tests, heart rate programs and a custom program are available for more serious users. The fitness test programs include a Gerkin Protocol Fitness Test and 6 Readiness Test Programs (Army, Navy, AirForce, Marines, Coast Guard, PEB). User comfort was considered with the addition of the Turbo cooling fan, five convenient accessory trays and ergonomically positioned Heart Rate Grips. The CT850ENT also accommodates extended handrails for clients that require extra stability (sold separately). Console FeedbackLarge 15.6" Touchscreen Display with TV, web browsing, and audio streaming Muscle ActivationIt's important to understand which muscle groups are gaining the most benefit during your workout. On our treadmills, you will be using your glute