This stair climbing hand truck has variable low and high gear climbing speed with a maximum speed of 34 steps per minute. A 48V removable Lithium battery with a battery capacity at maximum load being 1,200 steps and battery capacity at full charge being 1,800 steps (depending upon weight). The maximum step height is 8 1/4" and the overall product height is 61" with a folded height of 48".  Includes battery charger and available with either 10" pneumatic or solid rubber wheels at no additional charge. Made in China.