Specification: Case Material: Highly transparent and corrosion-resistant PC (2805) Button Material: Silicone Waterproof Ring Material: Amorphous high activity silicone Material of Connecting Shaft: High hardness 304 stainless steel Case Dimension: 93 x 67 x 95 mm Applicable Models: for Inst360 ACE pro Package List: 1x Diving Case +1x Invisible Base + Screws