The professional design of The PowerMax Fitness TAC-330 Semi-Commercial AC Motorized Treadmill with Semi-Auto Lubricating treadmill motor is in accordance with a 3.0HP AC motor that makes the motor reliable at high speed. Compatible with the MP3 player through a line-in connection, the treadmill offers you the most enjoyable sports experience. Instead of just listening to music, you can speak to the phone while running. In TAC-330 Audio is available through a built-in speaker. With high protection of knees and ankles, users can work out safely! Besides the Dual Spring shock absorbing balls, equipped with double layer running Cushions, which absorb the shock efficiently while running. The convenient design of the contact pulse measurement system allows users to easily and comfortably control the exercise progress. The easy to use HSS folding system allows you to unfold the treadmills by simply kicking the yellow tube and lowering the treadmill. This exclusive HSS supports the weight as the treadmill is lowered and lifted. The display is a 12.7cm LCD Blue Screen that displays time, speed, distance, incline, and calories burned, and heart rate. The other factors that treadmills hold are wheels for transportation, foldable, and easy to install, iPad holder, AUX, USB, Input, and HI-FI speaker with music control keys.