The Smooth 4 creates stable and smooth video recordings with a smartphone. An integrated control panel reduces the need to touch the screen and helps users control both the stabilizer and the smartphone camera directly with hot-key buttons. Allows Focus Pull and Zoom, Object Tracking, Time Lapse. Features Easy Switching Mode; Users must download the "ZY Play" app to their smartphone and connect by Bluetooth with the Smooth 4. The QR code on the equipment tag may be scanned or app searched online. Android 5.0 or above or iOS 10.0 or above required; iPhone users, video files are saved in the ZY PLAY app, select which files to DELETE or SAVE in Photos app. Android phone confirmed to work - LG G8x Thin Q. App may not install on some Android devices; Battery runtime up to 12 hours; Max payload 210 g Min 75g; Orientation required for first time users; Scan QR codes on equipment tag for information; Model SMA04