Feature: 1. The camera track dolly is made of aluminum alloy, strong and durable, with a maximum bearing capacity of 4Kg, with 1/4 and 3/8 conversion screws. The panel is equipped with multiple 1/4 and 3/8 threaded holes, which can be used with smart phones, motion cameras, digital cameras, DSLR cameras and so on. 2. There are 5 speed adjustable (11,8 mm/s, 16,4 mm/s, 19,5 mm/s, 22 mm/s, 25,8 mm/s), supporting acceleration/deceleration, forward/backward operation to meet different shooting needs. Suitable for time-lapse photography, low angle and other video shooting. 3. Equipped with 2.4G remote controller, you can use the remote control to easily change the sliding direction and speed of the car. Or through the control button on the track dolly to operate. 4. The front wheel can rotate about 90°, and the angle can be adjusted arbitrarily to make the pulley move along the straight line, circular path and other directions to obtain different shooting effects. 5. Equipped with 650 mAh rechargeable battery, it can provide up to 8 hours of operation under mobile phone load (0.8 hours under maximum load). It is convenient and fast to charge the car through the USB cable. 6. Support A-B path memory function, intelligent memory between two points of path, scene recording with track reproduction. Specification: Condition: Item Type: Camera Track Dolly : Kingjoy Model: PPL-06S Pro Material: aluminum, Maximum bearing capacity: 4Kg Battery model: 14430 (1 pcs, including) Voltage: 3.7V Battery capacity: 650mAh Service time: about 0.8 hours under the maximum load, about 8 hours under the mobile phone load Straight line speed: 5 gears, 11,8 mm/s, 16,4 mm/s, 19,5 mm/s, 22 mm/s, 25,8 mm/s The default driving speed: 25.8mm/s Driving range of multi-angle regulating direction of front wheel (angle-running radius): The front wheel is adjusted to the right 10 degrees-450mm 20 degrees-210mm 30 degrees-135mm 40 degrees-75mm 50 degrees-40mm 60 degrees-12mm Noise: 60 db Size: approx. 145x122x65mm/5.7x4.8x2.6inch Weight: approx. 437g Package List: 1 x Camera Track Dolly1 x Remote Controller3 x Rubber Ring3 x Wrench1 x Adapting Screw1 x USB Cable1 x Phone Clip1 x Manual