DIGITAL LCD DISPLAY WITH AUTO-REP COUNTER: Our Twister Arm Trainer features a smart digital screen that automatically counts every rep for you in COUNT mode. No more losing trackfocus on your form and let the chest workout equipment handle the math. CALORIE ESTIMATOR & TIMER: Switch to KCAL mode to get an estimated calorie burn (each press 0.5 kcal). The built-in timer in all modes helps you pace your workouts, making this arm and chest trainer your smart workout partner.