Built-in Magnet, IPX4 Waterproof and Dustproof: Uses super strong magnets, so it can be firmly attached to metal objects and fixed to the camera using the head hole. Designed with attention to detail or hang it on a tree branch, tent, etc., so you don't have to worry about it falling off. With IPX4 waterproof and dustproof features, it can withstand bad weather, and is useful for taking photos and complementing work, camping, night fishing, cave exploration, construction engineering, SOS encounter signal, disaster preparedness, earthquakes, power outages, etc