commercial treadmill Heart rate measure: wireless receiver + bosom belt transmittal LED display, Aluminum materials commercial treadmillMotor: AC motor, type No.: YVPP 100L 1-4 2.2KWHorse power: 3.5HP(continuous)/5.0HP(MAX)Controller: frequency converterSpeed range: 1.0-20 Km/h,0.1Km/h increasing.Incline: 0-15%Display: time, speed, distance, incline, calorie, heart rate.9 pre-set motion ...