{"product_id":"klassnum-nd2-400-adjustable-dimming-sunglasses-9-level-uv400","title":"KLASSNUM ND2-400 Adjustable Dimming Sunglasses UV400 9-Level","description":"\n\u003ch2\u003eKLASSNUM ND2-400 Adjustable Dimming Sunglasses – 9-Level ND Filter with UV400 Protection\u003c\/h2\u003e\n\n\u003cp\u003eExperience next-level light control with the \u003cstrong\u003eKLASSNUM ND2-400 Adjustable Dimming Sunglasses\u003c\/strong\u003e. Featuring a unique 9-level adjustable neutral density (ND) filter, these sunglasses let you dial in the perfect lens density for any lighting condition — from overcast mornings to blinding midday sun. Whether you're on the road, out on the water, or enjoying a casual day outdoors, these glasses keep your vision sharp, clear, and comfortable.\u003c\/p\u003e\n\n\u003cp\u003eMade in Mainland China.\u003c\/p\u003e\n\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003e9-Level Adjustable ND2-400 Filter:\u003c\/strong\u003e Twist to select from 9 distinct dimming levels, giving you full control over how much light reaches your eyes — perfect for rapidly changing outdoor conditions.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eUV400 Protection:\u003c\/strong\u003e Polycarbonate lenses with UV400 certification shield your eyes from UVA and UVB rays, keeping your vision safe during extended outdoor use.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eGlare Reduction:\u003c\/strong\u003e Mirror-coated polarized-style lenses cut down reflective glare from roads, water, and other bright surfaces, enhancing visual clarity while driving or fishing.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLightweight \u0026amp; Durable Build:\u003c\/strong\u003e Plastic (PC) frame with metal accents keeps the glasses sturdy yet comfortable for all-day wear.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eIncludes Glasses Case:\u003c\/strong\u003e Each pair comes packaged with a protective case to keep your lenses scratch-free when not in use.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eVersatile Style:\u003c\/strong\u003e Circular frame design suits a wide range of face shapes and casual looks.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e KLASSNUM\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFilter Range:\u003c\/strong\u003e ND2–ND400 (9 adjustable levels)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLens Material:\u003c\/strong\u003e Polycarbonate (ND)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFrame Material:\u003c\/strong\u003e PC Plastic \u0026amp; Metal\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFrame Style:\u003c\/strong\u003e Circular \/ Round\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eUV Protection:\u003c\/strong\u003e UV400\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTotal Length:\u003c\/strong\u003e 140 mm (5.51 in)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLens Diameter:\u003c\/strong\u003e 48 mm (1.89 in)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLens Height:\u003c\/strong\u003e 48 mm (1.89 in)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSuitable For:\u003c\/strong\u003e Adults\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBest Use:\u003c\/strong\u003e Driving, fishing, outdoor casual wear\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat's in the Box\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e1 × KLASSNUM ND2-400 Adjustable Dimming Sunglasses\u003c\/li\u003e\n  \u003cli\u003e1 × Protective Glasses Case\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eRelated Products You May Like\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003ca href=\"\/products\/t10-w5w-cob-led-car-bulbs-12v-waterproof-marker-dome-parking-lights-10-pack\"\u003e10-Pack T10 W5W COB LED Car Bulbs 12V Waterproof Marker Lights\u003c\/a\u003e – Upgrade your vehicle's interior and exterior lighting.\u003c\/li\u003e\n  \u003cli\u003e\n\u003ca href=\"\/products\/multifunctional-car-seat-organizer-anti-skid-phone-storage-holder\"\u003eCar Seat Gap Organizer – Anti-Skid Phone \u0026amp; Storage Holder\u003c\/a\u003e – Keep your car tidy and your essentials within reach on every drive.\u003c\/li\u003e\n  \u003cli\u003e\n\u003ca href=\"\/products\/motion-sensor-rechargeable-led-night-light-magnetic-wall-lamp\"\u003e3-Color Motion Sensor LED Night Light – Rechargeable Wall Lamp\u003c\/a\u003e – Smart lighting for your home or garage.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eLearn more: \u003ca href=\"https:\/\/www.nei.nih.gov\/learn-about-eye-health\" target=\"_blank\" rel=\"noopener\"\u003eNational Eye Institute on eye health\u003c\/a\u003e\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003ch4\u003eQ: How does the 9-level ND filter work on these adjustable dimming sunglasses?\u003c\/h4\u003e\n\u003cp\u003eA: The ND2-400 adjustable filter works by rotating the outer lens element relative to the inner one, progressively stacking the neutral density layers. This lets you select from 9 distinct dimming levels — from a very light tint (ND2) to an extremely dark shade (ND400) — so you can fine-tune light transmission based on how bright your surroundings are, all without changing glasses.\u003c\/p\u003e\n\u003ch4\u003eQ: Are these sunglasses suitable for driving?\u003c\/h4\u003e\n\u003cp\u003eA: Yes! The UV400-rated lenses and glare-reducing mirror coating make these sunglasses excellent for driving in bright, sunny conditions. The adjustable ND filter lets you adapt quickly as light conditions change — for example, when moving from shaded streets to open highways.\u003c\/p\u003e\n\u003ch4\u003eQ: Do the KLASSNUM ND2-400 sunglasses come with a protective case?\u003c\/h4\u003e\n\u003cp\u003eA: Yes, each pair includes a protective glasses case to keep your lenses safe from scratches and dust when stored or carried.\u003c\/p\u003e\n\u003ch4\u003eQ: What frame and lens materials are used in these sunglasses?\u003c\/h4\u003e\n\u003cp\u003eA: The frame is made from a combination of PC (polycarbonate) plastic and metal for a lightweight yet durable structure. The lenses are also polycarbonate (PC), which is impact-resistant and suitable for active outdoor use.\u003c\/p\u003e\n\u003c!-- production-packaging-notice --\u003e\n\u003ch3\u003eProduction \u0026amp; Packaging Notice\u003c\/h3\u003e\n\u003cp\u003eTo maintain high stock availability and fast shipping times, our items are sourced from multiple verified manufacturing facilities. While the core quality, materials, and product specifications remain identical, you may notice slight variations in the packaging design, manufacturing origin, or the wording of the printed instructions.\u003c\/p\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"FAQPage\", \"mainEntity\": [{\"@type\": \"Question\", \"name\": \"How does the 9-level ND filter work on these adjustable dimming sunglasses?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"The ND2-400 adjustable filter works by rotating the outer lens element relative to the inner one, progressively stacking the neutral density layers. 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