The X-Tra 875 works with 3.0 HP and much quieter, has an integrated Bluetooth system and their respective speakers to bring more fun.The 46 exercise programs that have been integrated to work out resistance, weight goals and challenges that you can customize, register, always adapted to your fitness level. In addition, it has 18 different speeds and a wide range of slopes, which can increase up to 12%, prepared for ambitious runners.