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quality of construction
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compliance with U.S.C.G. Navigation Rules for "vessels under oars"
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loss-proof, impact resistant fastening system
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ease of attachment/detachment
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battery life (100+ hours)
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lamp: 2-LED bright white
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lamp life (10,000 hours)
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buoyancy: floats if dropped overboard
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submersible to 1000 feet (300 meters)
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body and Lexan lens capable of sustaining direct impact
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resistance to UV (sunlight) and salt corrosion
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reconfigurable: lenses, LED modules, extension kit
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replacement parts available separately: lens, LED module, body, base, cable/clip
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user-replaceable standard batteries (AA) included
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portability: compactness of size/weight
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high visibility (both diffuse and direct line of sight to LED point light source)
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alternative uses on water: deck light, anchor light, electric torch, flashlight
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freestanding: alternative use onshore include tent/table light
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compliance with international navigational lighting standards
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compliance with SOLAS and USA inland regs
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Company reputation and track record