Features:Upgraded motorized camera dolly with scale indication, 3 speeds adjustable (2.4cm/s 2.6cm/s 2.8cm/s); support move to the opposite direction; Wheel angle 180adjustable, you can achieve creative circle route/straight line movement. An perfect auto dolly for time lapse/macro/low angle video shooting.The Body is made of high quality plastic material, can support up 3kg/6.6lbs load, Pocket size and lightweight, easy to carry.The wireless remote control can change speed direction make a pause, effective distance 6m/19.7ft; the dolly itself has control keys too.1/4 to 3/8 convertible screw is suitable for most camera/smartphone holder.Built-in 1800mAh rechargeable li-ion battery can offer up to 6hrs service time; With USB charging port and charging cable, 4 light indicators showing charging status(red-green), battery power(flashing) and speed(normal on).