Learn Smooth 4 in 1 Minute Quick Tutorial - YouTube
Zhiyun 3-axis Gimbals Handheld Stabilizer Smooth 4 Gimbal For Smart Phone Iphone/samsung/huawei/xiaomi/android Action Camera - Handheld Gimbals - AliExpress
Zhiyun Smooth 4 & 5 - Less is More Smooth 4 is designed with a slider on its control panel and a trigger button on its back, to easily recognize and switch