[Perfect Fit for Insta360 X3]Precisely molded to fit for Insta360 X3 action camera, ensuring optimal protection and functionality. [High-Quality Optical Lens]PMMA lens material with 98% light transmission after AR coating, featuring AS water-repellent and anti-fingerprint coating, and 5H surface hardness for scratch resistance. [Durable PC Shell]Reinforced PC shell with internal and external micro-texturing for enhanced scratch resistance and a premium feel. [360° Seamless Panoramic View]Unique optical spherical lens design eliminates blind spots, allowing for seamless underwater panoramic stitching. [50m Waterproof Design]Ideal for diving, snorkeling, swimming, and other water sports with full-body waterproof protection up to 50 meters depth. [Premium Materials]Features high-activity amorphous silicone waterproof ring, high-hardness 304 stainless steel connecting axis, and stainless steel buttons for durability. Specifications: Model: PU890T Compatible with: for Insta360 X3 Lens Material: PMMA with AR coating Lens Light Transmission: 98% Lens Surface Hardness: 5H Shell Material: Hardened PC with micro-texturing Waterproof Depth: 50 meters Waterproof Ring: Non-crystalline high-activity silicone Connecting Axis: High-hardness 304 stainless steel Buttons: Stainless steel