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 180°adjustable, 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).   Specifications: Color: Black;  Body Material: Plastic;  Camera Screw: 1/4" to 3/8" Convertible Screw;  Maximum Load Capacity: 3kg / 6.6lbs;  Speed: 2.4cm/s 2.6cm/s 2.8cm/s(Camera Weight Must Be 1kg);  Dolly Battery Life: 6hrs;  Dolly Full Charge Time: 3hrs;  Dolly Built-in Battery: 3.7V 1800mAh Rechargeable Li-ion Battery (Included.);  Remote Control Effective Distance: 6m / 19.7ft;  Remote Control Battery: CR2032 Battery, 3V(Included.);  Remote Battery Life: 18H;  Remote Standby Time: 2 Years;  Item Size: 12.2 * 10.6 * 3.8cm / 4.8 * 4.2 * 1.5in;  Item Weight: 296g / 10.4oz;  Package Size: 13.7 * 13.7 * 7cm / 5.4 * 5.4 * 2.8in;  Package Weight: 495g / 17.5oz;   Note: Camera and smartphone are not included.   Package List: 1 * Dolly with Battery;  1 * Remote Control with Battery;  1 * USB Cable;  1 * Connector;  1 * Wrench;  1 * Wheel Ring;  1 * User Manual