Features: brand new and high quality It is wireless Bluetooth-compatible remote control, remote control range of 6 meters. The speed is adjustable with three gears. It can complete a number of complex environment photography tasks. Equipped with USB port, easy charging. The autodolly is compact and light, foldable, easy to carry out. Specifications: Material:Aluminum Alloy Size:Approx.10x7x3cm/3.94x2.76x1.18in Net Weight:537g Wireless Remote Control Diatance:6Meters Speed One:1.4cm/s Speed Two:2.4cm/s Speed Three:3.0cm/s Standby for Time of Remote:6Months Charging Time:Approx.3Hours Normal Use for Time of Remote:60000 Package Includes: 1x Autodolly 1x Remote Control with Battery 1x USB Cable note: Please allow 1mm errors due to manual measurement. Due to the difference between different monitors, the picture may not reflect the actual color of the item.