Usage Occasions -- The Pellking phone chest mount is suitable for skiing, fishing, biking, and motorcycle riding, providing hands-free convenience for video commentary. We do not recommend using it for shooting video during jumping or running activities. When you enable the anti-shake function on your phone, video recording performance will be improved.Great Choice for POV/VLOG -- The phone can be positioned horizontally or vertically. The J-hook and long screw design allows 90-degree rotation. The strap size is easily adjustable, fitting over thick winter jackets and accommodating a wide range of body sizes.Stable Structure -- The phone holder features two non-slip rubber pads at the top and bottom. By using the included mini wrench to securely tighten the long screw into the J-hook mount, the phone clamp maintains the set angle firmly, ensuring stable and shake-free recording without slipping.Quick Release -- The smartphone chest strap mount with J-hook allows for easy installation and removal. The device can be assembled or disassembled in seconds, offering high convenience.