ITEM NAME:Suitable for GOPRO4 waterproof shell skydiving helmet curved self-timer 15 #gib Store Home Promotion Hot Item Add to Fav.(Normal people dive at 10m-20m, deep diving: 30m). The key screw of the waterproof shell is made of 316 stainless steel, which can resist the erosion of ocean and corrosive industrial atmosphere. It has good oxidation resistance and heat resistance.
