Features: l This lens protector is crafted from optical tempered glass and features advanced coating technology, including anti-reflective (AR), anti-fog, and hydrophobic layers. Additionally, it undergoes extra hardening treatment, achieving a surface hardness rating of 9H—approximately ten times harder than standard plastic screen protectors (typically around 1H). It offers exceptional durability and scratch resistance, ensuring long-lasting clarity and protection. Its native light transmittance is approximately 95%, while the AR coating further enhances it to over 98%, delivering crisp, lifelike image quality l Anti-Fog & Water-Resistant Protection: Coated with a hydrophobic layer featuring a water contact angle of up to 115 degrees, preventing water droplets from adhering to the lens. Anti-fog functionality ensures clear visuals in both cold outdoor environments and humid indoor settings l Distortion-Resistant & High-Temperature Tolerance: Maintains stable performance even in high-temperature conditions, resisting deformation or damage for reliable all-weather use l Installation: Features a user-friendly twist-lock design for quick, tool-free installation and removal l Portability: This lens protector weighs a mere 4.2 grams net, with packaging weighing 45 grams total—compact and lightweight Specifications: l Material: Optical Tempered Glass l Size: 3.3x 1.2cm l Quantity: 1 Set l Type: Snap-on Type (PU1066T) l Applicable Model: for Insta360 X4 Air Package: 1 x Buckle Protection Lens + 2 x Alcohol Cotton Pad Note: Only the above package content, does not include other accessories.