The Assault Air Runner is a non-motorized treadmill that is great for interval training. Treadmill runs on your energy with zero electrical consumption. Steel frame with corrosion-resistant hardware and a slat belt running surface that lasts up to 150,000 miles. Burns up to 30% more calories than a motorized treadmill. LCD console is Bluetooth compatible. Measures 69.9 in. long x 32.8 in. wide x 64 in. high.