{"product_id":"red-light-pen-flashlight-camping-hiking-astronomy-beekeeping-night-vision","title":"ESMARTER Red Light Penlight Flashlight | Camping \u0026 Astronomy","description":"\n\u003ch2\u003eESMARTER Red Light Pen Flashlight – Your Ideal Low-Profile Outdoor Companion\u003c\/h2\u003e\n\u003cp\u003eMeet the \u003cstrong\u003eESMARTER NK004 Red Light Penlight\u003c\/strong\u003e — a compact, pocket-sized aluminum flashlight engineered for anyone who works, explores, or observes in low-light conditions. Emitting a focused \u003cstrong\u003epure red beam up to 50 meters\u003c\/strong\u003e, this penlight preserves your natural night vision so your eyes stay adjusted to the dark — perfect for astronomy, beekeeping checks, night photography, and so much more.\u003c\/p\u003e\n\n\u003cp\u003eUnlike white-light flashlights that overwhelm the eyes and disturb wildlife, a red light is far gentler, making it a trusted choice for \u003cstrong\u003eastronomers, hunters, campers, hikers, aviation enthusiasts, beekeepers, and photographers\u003c\/strong\u003e who need to see clearly without disrupting their environment.\u003c\/p\u003e\n\n\u003chr\u003e\n\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e🔴 \u003cstrong\u003ePure Red LED Beam\u003c\/strong\u003e — preserves night vision adaptation; ideal for dark-room use, outdoor observation, and animal-friendly lighting\u003c\/li\u003e\n  \u003cli\u003e💡 \u003cstrong\u003e3W LED, ~150 Lumens\u003c\/strong\u003e — bright enough to illuminate up to 50 meters in darkness\u003c\/li\u003e\n  \u003cli\u003e✏️ \u003cstrong\u003ePen-Sized \u0026amp; Lightweight\u003c\/strong\u003e — 5.2 × 0.6 inch body weighs only ~30g; slips easily into a shirt pocket, gear bag, or tool kit\u003c\/li\u003e\n  \u003cli\u003e🔩 \u003cstrong\u003eDurable Aluminum Alloy Body\u003c\/strong\u003e — sturdy, impact-resistant construction built to handle outdoor adventures\u003c\/li\u003e\n  \u003cli\u003e💧 \u003cstrong\u003eWaterproof IP44 Rating\u003c\/strong\u003e — splash and weather resistant for confident use in the field\u003c\/li\u003e\n  \u003cli\u003e🔋 \u003cstrong\u003eRuns on 2×AAA Batteries\u003c\/strong\u003e (not included) — easy to find and replace anywhere\u003c\/li\u003e\n  \u003cli\u003e🔘 \u003cstrong\u003eSimple Tail Press Button\u003c\/strong\u003e — single ON\/OFF mode for instant, distraction-free operation\u003c\/li\u003e\n  \u003cli\u003e✅ \u003cstrong\u003eCE \u0026amp; EMC Certified\u003c\/strong\u003e — meets international safety and electromagnetic standards\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003chr\u003e\n\n\u003ch3\u003ePerfect Uses for the Red Light Penlight\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e⭐ \u003cstrong\u003eAstronomy \u0026amp; Stargazing\u003c\/strong\u003e — read star charts without collapsing your dark adaptation\u003c\/li\u003e\n  \u003cli\u003e🐝 \u003cstrong\u003eBeekeeping\u003c\/strong\u003e — inspect hives at night without startling bees\u003c\/li\u003e\n  \u003cli\u003e🏕️ \u003cstrong\u003eCamping \u0026amp; Hiking\u003c\/strong\u003e — navigate trails and campsites without disturbing fellow campers or wildlife\u003c\/li\u003e\n  \u003cli\u003e✈️ \u003cstrong\u003eAviation\u003c\/strong\u003e — review cockpit charts with a low-glare red beam\u003c\/li\u003e\n  \u003cli\u003e🎣 \u003cstrong\u003eFishing\u003c\/strong\u003e — bait hooks and check lines in the dark\u003c\/li\u003e\n  \u003cli\u003e📷 \u003cstrong\u003ePhotography Darkrooms\u003c\/strong\u003e — use a red-safe light to work with light-sensitive materials\u003c\/li\u003e\n  \u003cli\u003e🌙 \u003cstrong\u003eNight Reading \u0026amp; Navigation\u003c\/strong\u003e — read maps, books, or instruments without overpowering ambient darkness\u003c\/li\u003e\n  \u003cli\u003e🦌 \u003cstrong\u003eWildlife \u0026amp; Animal Observation\u003c\/strong\u003e — observe without startling nocturnal animals\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003chr\u003e\n\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003ctable\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eModel\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eNK004\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBody Material\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eAluminum Alloy\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDimensions\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e5.2 × 0.6 inches\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eWeight\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e~30g\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eLED Power\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e3 Watts\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBrightness\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e~150 Lumens\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBeam Range\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e~50 meters\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eLight Color\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eRed\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eWaterproof\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eIP44\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSwitch\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eTail Press Button (ON\/OFF)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBattery\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e2×AAA (Not Included)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCertification\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eCE, EMC\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCountry of Origin\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eMade in Mainland China\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003chr\u003e\n\n\u003ch3\u003eWhat's in the Box\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e1× ESMARTER Red Light Pen Flashlight (NK004)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cem\u003eNote: 2×AAA batteries are NOT included.\u003c\/em\u003e\u003c\/p\u003e\n\n\u003chr\u003e\n\n\u003ch3\u003eRelated Products You Might Like\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/1-2m-foam-pool-noodle-hollow-buoyancy-float-stick-kids\"\u003e1.2m Foam Pool Noodle – Hollow Float Stick for Kids \u0026amp; Family\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/eagle-hawk-kite-bird-scarer-garden-bird-repellent-1-1m\"\u003e1.1M Eagle Hawk Kite Bird Scarer – Garden Bird Repellent\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/1-inch-impact-rocker-sprinkler-adjustable-rotating-irrigation\"\u003e1-Inch Impact Rocker Sprinkler – Adjustable Rotating Irrigation\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eFor more guidance on safe use of lighting during outdoor and nighttime activities, visit the \u003ca href=\"https:\/\/www.nps.gov\/subjects\/nightskies\/index.htm\" target=\"_blank\" rel=\"noopener noreferrer\"\u003eNational Park Service Night Skies Program\u003c\/a\u003e — a trusted resource for astronomers and outdoor enthusiasts.\u003c\/p\u003e\n\n\u003chr\u003e\n\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\n\u003ch4\u003eQ: Why use a red light flashlight instead of a standard white-light flashlight?\u003c\/h4\u003e\n\u003cp\u003eA: Red light has a longer wavelength that is much less disruptive to your eyes' dark adaptation. When you switch from a white light to darkness, it can take 20–30 minutes for your eyes to fully readjust. A red light penlight like the ESMARTER NK004 lets you see clearly while keeping your pupils adjusted for low-light environments — a key advantage for stargazing, aviation chart reading, camping, and wildlife observation.\u003c\/p\u003e\n\n\u003ch4\u003eQ: Is the ESMARTER red light penlight waterproof?\u003c\/h4\u003e\n\u003cp\u003eA: Yes! The NK004 carries an IP44 waterproof rating, meaning it is protected against splashing water from any direction. It's well-suited for outdoor use in light rain, morning dew, or humid camping and fishing conditions.\u003c\/p\u003e\n\n\u003ch4\u003eQ: What batteries does this red light flashlight use?\u003c\/h4\u003e\n\u003cp\u003eA: It requires 2×AAA batteries, which are widely available but not included in the package. Simply load them in and press the tail button to activate the red beam.\u003c\/p\u003e\n\n\u003ch4\u003eQ: Is this penlight suitable for beekeeping at night?\u003c\/h4\u003e\n\u003cp\u003eA: Absolutely. Bees are largely insensitive to red wavelengths of light, making a red flashlight an excellent tool for nighttime hive inspections. The ESMARTER penlight's slim, pen-sized design makes it easy to hold while your hands are occupied with hive tools.\u003c\/p\u003e\n\n\u003ch4\u003eQ: Can I use this flashlight for astronomy and stargazing?\u003c\/h4\u003e\n\u003cp\u003eA: Yes, the ESMARTER NK004 is a popular choice among amateur astronomers. Its red beam lets you read star charts, adjust telescope settings, and navigate in the dark without destroying the night vision you've built up over time.\u003c\/p\u003e\n\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"FAQPage\", \"mainEntity\": [{\"@type\": \"Question\", \"name\": \"Why use a red light flashlight instead of a standard white-light flashlight?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Red light has a longer wavelength that is much less disruptive to your eyes' dark adaptation. When you switch from a white light to darkness, it can take 20–30 minutes for your eyes to fully readjust. A red light penlight like the ESMARTER NK004 lets you see clearly while keeping your pupils adjusted for low-light environments — a key advantage for stargazing, aviation chart reading, camping, and wildlife observation.\"}}, {\"@type\": \"Question\", \"name\": \"Is the ESMARTER red light penlight waterproof?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Yes! The NK004 carries an IP44 waterproof rating, meaning it is protected against splashing water from any direction. It's well-suited for outdoor use in light rain, morning dew, or humid camping and fishing conditions.\"}}, {\"@type\": \"Question\", \"name\": \"What batteries does this red light flashlight use?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"It requires 2×AAA batteries, which are widely available but not included in the package. Simply load them in and press the tail button to activate the red beam.\"}}, {\"@type\": \"Question\", \"name\": \"Is this penlight suitable for beekeeping at night?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Absolutely. Bees are largely insensitive to red wavelengths of light, making a red flashlight an excellent tool for nighttime hive inspections. The ESMARTER penlight's slim, pen-sized design makes it easy to hold while your hands are occupied with hive tools.\"}}, {\"@type\": \"Question\", \"name\": \"Can I use this flashlight for astronomy and stargazing?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Yes, the ESMARTER NK004 is a popular choice among amateur astronomers. Its red beam lets you read star charts, adjust telescope settings, and navigate in the dark without destroying the night vision you've built up over time.\"}}]}\u003c\/script\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"BreadcrumbList\", \"itemListElement\": [{\"@type\": \"ListItem\", \"position\": 1, \"name\": \"Home\", \"item\": \"https:\/\/oasis-select.com\/\"}, {\"@type\": \"ListItem\", \"position\": 2, \"name\": \"Outdoor \u0026 Sports\", \"item\": \"https:\/\/oasis-select.com\/collections\/outdoor-sports\"}, {\"@type\": \"ListItem\", \"position\": 3, \"name\": \"ESMARTER Red Light Penlight Flashlight | Camping \u0026 Astronomy\", \"item\": \"https:\/\/oasis-select.com\/products\/red-light-pen-flashlight-camping-hiking-astronomy-beekeeping-night-vision\"}]}\u003c\/script\u003e","brand":"Oasis Select","offers":[{"title":"702 red lgiht \/ Black \/ AAA","offer_id":47755473715305,"sku":"136:10#702 red lgiht;200000531:771#Black;272777098:1636","price":9.31,"currency_code":"USD","in_stock":true},{"title":"702 red light 2PCS \/ Black \/ AAA","offer_id":47755473748073,"sku":"136:173#702 red light 2PCS;200000531:771#Black;272777098:1636","price":9.31,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0679\/7931\/3257\/files\/Sdb67a7c9e95942c28c84ccbe853880b3W.webp?v=1783269542","url":"https:\/\/oasis-select.com\/products\/red-light-pen-flashlight-camping-hiking-astronomy-beekeeping-night-vision","provider":"Oasis Select","version":"1.0","type":"link"}