15% Auto Incline & 12 HIIT ProgramsClimb virtual hills, burn real calories. The 15% auto incline treadmill intensifies every workout. With 12 preset HIIT programs, get efficient, fat-burning sessions perfect for a quick home office cardio blast or a structured training routine 3.5 HP Quiet Motor & Joint-Friendly Cushioning Train hard without the noise. The 3.5 HP brushless motor runs powerfully yet quietly (under 48dB). The dual-layer deck with 10 shock absorbers provides superior joint protection for a smooth, comfortable, and low-impact run anytime