The ProForm GT85 X is different from most stationary bikes in that it has an interactive display with software that simultaneously prompts you through both your strength-training exercises and your cardio workout. The silent magnetic and digital resistance keeps everything smooth. Three targeted CrossTrainer workouts and two Weight Loss workouts keep you motivated. Add Digital Resistance, a large LCD display, built-in workout fan, and an EKG Heart Rate Monitor and you have a complete workout machine! 90 day warranty.