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A true APO spotting scope at 2.65 pounds. Took us a while to get here. 🦅 The SA401 Pro uses a 3-group, 3-element APO lens system with dual-sided ED FCD1 glass and lanthanum glass. Translation: zero color fringing. Zero secondary spectrum. Just crisp, true-to-life images from edge to edge — even at 35x. What makes this scope special: 🔭 15-35x continuous zoom with a 2.33x ratio — find your target at 15x, zoom in to 35x without losing it 🌐 59°-75° apparent FOV — a cinematic wide-angle experience at every magnification 🎛 Large, glove-friendly focus wheel — precise adjustments in the field, no fumbling 🛡 Magnesium alloy integrated body — 1,200g, shock-resistant, built like a tank 💧 IPX7 waterproof + nitrogen-purged — rain, fog, humidity don't touch the internals ❄ Rock-solid from -4°F to 122°F — winter birding to summer wetlands, no excuses 👓 Twist-up eyecups with generous eye relief — glasses on or off, full field of view The 11-element, 7-group eyepiece with field curvature corrector keeps stars sharp and the field flat. Porro prism FBMC coating maximizes light throughput. 🎯 Shop now on the SVBONY official store.