Zhiyun Smooth 4 gimbal turns your phone into a professional filmmaking device and helps you create smooth and stable footage with just a smartphone. Now begin your Hollywood film. Features: [Integrated Control Panel Design] There is an intergrated control panel on the Smooth 4 stabilizer handle. Hot Keys Design for Instant Controls. You just need to turn on your phone€s bluetooth and connect it to the Smooth 4 stabilizer. Then you can access without touching the phone screen to control all parameters of phone camera. [Smooth Zoom and Precise Focus] Smooth 4 stabilizer is designed with a handwheel on its left. By rotating this unique follow-focus handwheel, you can smoothly zoom in/out the footage. Moreover, if you press the follow-focus button, the handwheel will turn into a follow-focus controller, where you can control the focus manually. [ Three Following Modes for Instant Scene Transition] There are three following modes that design for your instant scene transition. You can press the button to PF which is above the power button to turn Smooth 4 to Pan-Following Mode, in which the stabilizer will follow your hand€s direction horizontally. If you keep triggering the Full-Following Mode button on the back, the Smooth 4 is able to work on any angle you turn it to. Moreover, the Smooth 4 can follow every single of your movement [Object Tracking] Smooth 4 stabilizer can track objects including but not limited to human faces with much higher precision. Turn on the button on the lower-left of the phone screen and frame out the object you want to track, then the stabilizer can do the rest. Besides, there are more photograph mode: 180PANO, 3×3PANO, MUTI-EXPO, LONG-EXPO, SLO-MO, TIME-LAPSE, MO-TIMELAPSE, VERTIGO SHOT(Hitchcock Zoom). [Powerful Motor for Longer Run-time] The motor power has increased by a large extent and can run Smooth 4 stabilizer for 12 hours in a row. The stabilizer can be charged by portable power bank and also charge your phone directly during shooting via micro USB port on tilt axis.