Chest magnetic suction bracket + screw. Hang the chest magnetic suction on the neck, with a 180° adjustable angle. Truly liberate your hands. | Application 1: Suction cup bracket + tripod mounting adapter + screw. The suction cup bracket can securely fix the GoPro, easy to install and remove. It allows you to adjust your waterproof camera to multiple angles. For maximum suction, fix it on a clean surface. It is recommended to use a camera frame bracket instead of a waterproof case to connect our suction cup to avoid the camera being too heavy and falling off. | Application 2: Chest strap mounting device + surface J-shaped hook and loop + long screw bolt. The chest strap waist belt and J-shaped hook and loop help you securely place the GoPro camera in front of your chest for shooting and recording. Suitable for activities such as skydiving, cycling, swimming, diving, ice skating, and other outdoor sports. | Application 3: Headband installation + screw. Adjustable headband compatible with TIMNUT and other action cameras. | Essential action camera set: Suitable for skiing, hiking, snowboarding, mountain biking, cycling, kayaking, rafting, and other outdoor sports.