It must open cellphone Bluetooth first and then open APP "SOUING",no need to manually pair Bluetooth,it will be automatically connected within 3 seconds,Red light is long bright,if not,the red light is flashing. Do not move the face/object too fast.If want to stop rotating,Short press the power button. Compatible with for iOS10.0 or newer,and Android 8.1 or newer. Face tracking holder introduce the AI technology of human image composition and scale estimation into intelligent ,360 degrees rotate around, and automatically recognize the person/pet. Selfie stick can track and real-time objects, follow the displacement of objects, for example, when the dog is moving, the mobile phone also follows the dog, and then automatically . Colour: black Material: ABS Package Contents: 1 * Smart follow-up pan/tilt 1 * USB cable Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.