【Smartphone App Control】 The dolly can pair with iOS and Android smartphones for wireless smart control. It supports 3 modes: Manual, Video, and Time Lapse. Settings can be personalized and saved for quick application | 【Free Movement & 5 Speed Levels】The dolly can move smoothly straight and run side to side on even surfaces. You can operate the dolly in 5 speed levels by using the app. By manually angling the wheels, the dolly can achieve curved lines or move in circles. Different camera movements can help enhance your videos. | 【Shooting Mode Customization】 In Manual mode, you can set movement directions, speed (1-5 levels), and movement mode (even/slow). In Video mode, you can set movement directions, movement distance (66-999cm), and movement mode (even/slow). In Time Lapse mode, you can set shutter speed, frame length, number of shots, and fixed point shooting (Note: Time lapse photography needs a camera shutter cable and it is not included.) | 【Smooth & Silent Step Motors】 In addition to the precision bearings on the wheels for smoothness, a high precision motor is used to ensure that the sound is kept within 30dB during operation for a quiet video recording environment | 【Foldable Design & Wide Application】The dolly is foldable for ease of storage. Equipped with a 1/4” mounting screw and 360° ball head, the dolly can mount a smartphone (phone holder included), mirrorless camera, DSLR camera, and action camera of up to 6.6lb (3kg) - suitable for live streaming, interviewing, advertising, food videos, filmmaking, and more. The USB Type C is for charging and firmware upgrade