Features 1、3 Speeds Adjustable: The motorized camera trolley with scale indication supports 3 levels of adjustable speed(1.4 cm/s, 2.4 cm/s, 3.0 cm/s), ultra low noise and stable movement. 2、Flexible to Use: 180° adjustable side wheels angle allows you to achieve circle route or straight line movement, very suitable for time lapse/macro/low angle video recording. 3、Large Capacity Battery: The auto video trolley has a built in 1800mAh battery that can offer up to 6h working time and can be conveniently recharged by the included USB cable. 4、Wide Compatibility: Comes with a phone holder and a mounting screw adapter, and supporting 3 kg/6.6 lbs load capacity, the auto video trolley can work with most smartphones, action cameras, digital cameras, DSLR cameras, etc. 5、Convenient Remote Control: Come with a wireless remote control, you can change the moving direction and speed easily by the remote control conveniently; and there are control buttons on the trolley also. Specification Body Material: Plastic + Metal Camera Screw: 1/4 inch to 3/8 inch Convertible Screw Maximum Load Capacity: 3kg / 6.6lbs Speed: 1.4cm/s, 2.4cm/s, 3.0cm/s Trolley Battery Life: 6hrs Trolley Full Charge Time: 3hrs Trolley Built-in Battery: 3.7V 1800mAh Rechargeable Li-ion Battery Remote Control Effective Distance: 6m/ 19.7ft Remote Control Battery: CR2032 Battery, 3V(Included.) Remote Battery Life: 18H Item Size: 12.2 * 10.6 * 3.8cm / 4.8 * 4.2 * 1.5in Item Weight: 242g / 8.5oz Package List 1 * Trolley1 * Remote Control1 * Wrench1 * Wheel Rings1 * USB Cable1 * Mounting Screw Adapter1 * Phone Holder1 * User Manual