{"product_id":"the-zephyr-core-rechargeable-circulator-fan","title":"The Zephyr Core | 1200mAh Rechargeable Desktop Circulator Fan — 100-Speed Variable Control","description":"\u003cdiv class=\"product-narrative\" style=\"max-width: 800px; margin: 0 auto; font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif; color: #1a1a1a; line-height: 1.8;\"\u003e\n\n\u003cp\u003e\u003cstrong\u003eAir Is the Most Overlooked Design Material. Until You Control It.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eMost portable fans are noise machines that happen to move some air. The Zephyr Core inverts that hierarchy — it is an air-circulation instrument that happens to be portable. With 100 discrete speed settings controlled through a stepless variable adjustment, you are not choosing between low, medium, and high — you are dialing in the precise airflow rate that matches your thermal environment, from a whisper-quiet 5% breeze for bedside sleep to a directed 100% column for desk work in an un-air-conditioned room.\u003c\/p\u003e\n\n\u003cp\u003eAt its heart is a 1200mAh lithium battery that delivers 2-8 hours of cordless runtime depending on speed selection — enough for a full workday at moderate settings or overnight at low. When plugged into any USB-C power source, the fan operates indefinitely while simultaneously charging. The 360-degree adjustable head angle means the airflow vector can be directed with precision: upward for ceiling circulation that cools an entire room through convection, horizontal for personal desk cooling, or angled downward to dry a workspace or accelerate paint curing on small projects.\u003c\/p\u003e\n\n\u003cp\u003eThe 100-speed architecture is not a marketing gimmick — it is the difference between a fan you tolerate and a fan you forget is running. At speeds 1-20, the blade assembly produces less than 25 dB — below the threshold of a quiet library. At full output, it trades acoustic discretion for raw throughput: enough to feel across a standard office desk but still tolerable for phone calls. This is a tool for people who understand that thermal comfort is not binary — it is a continuous spectrum that deserves continuous control.\u003c\/p\u003e\n\n\u003cp\u003e\u003cem\u003eThere are two kinds of portable fans: those you hear, and those you feel. The Zephyr Core is the latter.\u003c\/em\u003e\u003c\/p\u003e\n\n\u003c\/div\u003e\n\n\u003chr style=\"border: 0; border-top: 1px solid #e0e0e0; margin: 30px 0;\"\u003e\n\n\u003cdiv class=\"product-features\" style=\"max-width: 800px; margin: 0 auto;\"\u003e\n\u003ch3 style=\"font-size: 18px; margin-bottom: 16px; color: #1a1a1a;\"\u003eKey Features\u003c\/h3\u003e\n\u003cul style=\"list-style: none; padding: 0;\"\u003e\n\u003cli style=\"padding: 8px 0; border-bottom: 1px solid #eee;\"\u003e✦ \u003cstrong\u003e100-Speed Stepless Control\u003c\/strong\u003e — Infinite adjustment from whisper-quiet 5% to full-output 100%; no preset speed gaps\u003c\/li\u003e\n\u003cli style=\"padding: 8px 0; border-bottom: 1px solid #eee;\"\u003e✦ \u003cstrong\u003e1200mAh USB-C Rechargeable\u003c\/strong\u003e — 2-8 hours cordless runtime; operates indefinitely while plugged in with simultaneous charging\u003c\/li\u003e\n\u003cli style=\"padding: 8px 0; border-bottom: 1px solid #eee;\"\u003e✦ \u003cstrong\u003e360 Degree Adjustable Angle\u003c\/strong\u003e — Direct airflow precisely: upward for room circulation, horizontal for personal cooling, downward for surface drying\u003c\/li\u003e\n\u003cli style=\"padding: 8px 0; border-bottom: 1px solid #eee;\"\u003e✦ \u003cstrong\u003eUltra-Quiet Brushless Motor\u003c\/strong\u003e — Below 25 dB at speeds 1-20; quieter than a library whisper, suitable for bedside sleep\u003c\/li\u003e\n\u003cli style=\"padding: 8px 0; border-bottom: 1px solid #eee;\"\u003e✦ \u003cstrong\u003eDesktop-Optimized Footprint\u003c\/strong\u003e — Compact base with anti-slip pads; stable on desks, nightstands, and workshop benches\u003c\/li\u003e\n\u003cli style=\"padding: 8px 0; border-bottom: 1px solid #eee;\"\u003e✦ \u003cstrong\u003eUniversal USB-C Charging\u003c\/strong\u003e — Compatible with phone chargers, power banks, laptop ports, and car USB adapters\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\n\u003chr style=\"border: 0; border-top: 1px solid #e0e0e0; margin: 30px 0;\"\u003e\n\n\u003cdiv class=\"product-specs\" style=\"max-width: 800px; margin: 0 auto;\"\u003e\n\u003ch3 style=\"font-size: 18px; margin-bottom: 16px; color: #1a1a1a;\"\u003eTechnical Specifications\u003c\/h3\u003e\n\u003cul style=\"list-style: none; padding: 0;\"\u003e\n    \u003cli style=\"padding: 8px 0; border-bottom: 1px solid #eee;\"\u003e\n\u003cstrong\u003eBattery Capacity:\u003c\/strong\u003e 1200mAh Lithium-Ion\u003c\/li\u003e\n    \u003cli style=\"padding: 8px 0; border-bottom: 1px solid #eee;\"\u003e\n\u003cstrong\u003eSpeed Range:\u003c\/strong\u003e 1-100 stepless variable adjustment\u003c\/li\u003e\n    \u003cli style=\"padding: 8px 0; border-bottom: 1px solid #eee;\"\u003e\n\u003cstrong\u003eRuntime:\u003c\/strong\u003e 2-8 hours (speed-dependent)\u003c\/li\u003e\n    \u003cli style=\"padding: 8px 0; border-bottom: 1px solid #eee;\"\u003e\n\u003cstrong\u003eCharging Port:\u003c\/strong\u003e USB-C (cable included)\u003c\/li\u003e\n    \u003cli style=\"padding: 8px 0; border-bottom: 1px solid #eee;\"\u003e\n\u003cstrong\u003eNoise Level:\u003c\/strong\u003e 25 dB or less (low speed), 50 dB or less (max speed)\u003c\/li\u003e\n    \u003cli style=\"padding: 8px 0; border-bottom: 1px solid #eee;\"\u003e\n\u003cstrong\u003eHead Adjustment:\u003c\/strong\u003e 360 degree manual tilt\u003c\/li\u003e\n    \u003cli style=\"padding: 8px 0; border-bottom: 1px solid #eee;\"\u003e\n\u003cstrong\u003eBase:\u003c\/strong\u003e Anti-slip desktop pad\u003c\/li\u003e\n    \u003cli style=\"padding: 8px 0; border-bottom: 1px solid #eee;\"\u003e\n\u003cstrong\u003eUse Case:\u003c\/strong\u003e Home, Office, Travel, Desktop, Bedside\u003c\/li\u003e\n    \u003cli style=\"padding: 8px 0; border-bottom: 1px solid #eee;\"\u003e\n\u003cstrong\u003eCharge Time:\u003c\/strong\u003e Approximately 3-4 hours (0-100%)\u003c\/li\u003e\n    \u003cli style=\"padding: 8px 0; border-bottom: 1px solid #eee;\"\u003e\n\u003cstrong\u003ePower Input:\u003c\/strong\u003e 5V DC via USB-C\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\n\u003chr style=\"border: 0; border-top: 1px solid #e0e0e0; margin: 30px 0;\"\u003e\n\n\u003cdiv class=\"product-applications\" style=\"max-width: 800px; margin: 0 auto;\"\u003e\n\u003ch3 style=\"font-size: 18px; margin-bottom: 16px; color: #1a1a1a;\"\u003eApplication Scenarios\u003c\/h3\u003e\n\u003cp\u003eOffice workers in cubicles or shared spaces where building HVAC is inconsistent will place the Zephyr Core at desk corner, angled for personal cooling at speeds 15-30 — silent enough that neighboring desks cannot hear it. Night-shift workers sleeping during daylight hours in warm apartments use it at speeds 5-10 for bedside airflow without the mechanical drone that prevents deep sleep. Remote workers in home offices without dedicated AC run it at 40-60 during afternoon heat peaks, plugged into a laptop USB port for indefinite runtime. Workshop hobbyists — model painters, electronics solderers, resin crafters — use the downward angle setting to accelerate drying and fume dispersion without the turbulence of a full-size shop fan. Campers and RV travelers with USB power banks run it overnight in enclosed sleeping quarters where ventilation is limited but AC is unavailable.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003chr style=\"border: 0; border-top: 1px solid #e0e0e0; margin: 30px 0;\"\u003e\n\n\u003cdiv class=\"product-faq\" style=\"max-width: 800px; margin: 0 auto;\"\u003e\n\u003ch3 style=\"font-size: 18px; margin-bottom: 16px; color: #1a1a1a;\"\u003eFrequently Asked Questions\u003c\/h3\u003e\n\n\u003cdiv style=\"margin-bottom: 15px;\"\u003e\n\u003cp style=\"margin: 0 0 5px 0;\"\u003e\u003cstrong\u003eQ: How long does the battery actually last in real-world use?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp style=\"margin: 0; color: #555;\"\u003eAt speed 10 (quiet desk use): approximately 7-8 hours. At speed 50 (moderate personal cooling): approximately 4-5 hours. At speed 100 (maximum throughput): approximately 2 hours. These are real-world estimates; ambient temperature and battery age will cause minor variance. Connected to USB-C power, runtime is indefinite.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv style=\"margin-bottom: 15px;\"\u003e\n\u003cp style=\"margin: 0 0 5px 0;\"\u003e\u003cstrong\u003eQ: Is the fan truly quiet enough for sleep?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp style=\"margin: 0; color: #555;\"\u003eAt speeds 1-20, the blade noise measures below 25 dB — quieter than a whisper at 1 meter. For context: a typical bedroom at night is 30 dB ambient. The dominant sound at low speeds is the air movement itself, not motor noise. If you can sleep with a ceiling fan on low, this will be imperceptible.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv style=\"margin-bottom: 15px;\"\u003e\n\u003cp style=\"margin: 0 0 5px 0;\"\u003e\u003cstrong\u003eQ: Can it run while charging? Does it damage the battery?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp style=\"margin: 0; color: #555;\"\u003eYes, the Zephyr Core supports pass-through operation — run while plugged in, charge while running. The charge controller manages power distribution to prevent battery stress. For primary use as a desk fan that stays plugged in 90% of the time, this is the optimal configuration.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv style=\"margin-bottom: 15px;\"\u003e\n\u003cp style=\"margin: 0 0 5px 0;\"\u003e\u003cstrong\u003eQ: How does the 100-speed control actually work? Is it a physical dial?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp style=\"margin: 0; color: #555;\"\u003eThe speed is adjusted via a press-and-hold button interface — holding the button cycles through speeds smoothly. While not a physical analog dial, the electronic control provides continuous PWM adjustment to the brushless motor, achieving true stepless speed variation rather than preset steps with intermediate gaps.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv style=\"margin-bottom: 15px;\"\u003e\n\u003cp style=\"margin: 0 0 5px 0;\"\u003e\u003cstrong\u003eQ: Is this powerful enough to cool a room, or only personal use?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp style=\"margin: 0; color: #555;\"\u003eThis is a personal\/desktop circulator, not a room fan. At maximum speed, it can effectively circulate air in spaces up to approximately 100 square feet (9 square meters) when positioned for convection. For whole-room cooling, angle the fan upward to create an air circulation loop — this leverages the room natural convection currents rather than trying to brute-force air across the entire space.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv style=\"margin-bottom: 15px;\"\u003e\n\u003cp style=\"margin: 0 0 5px 0;\"\u003e\u003cstrong\u003eQ: Does it work with any USB-C cable and charger?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp style=\"margin: 0; color: #555;\"\u003eYes — standard 5V USB-C. It will charge from any USB-C phone charger, laptop port, power bank, or car adapter. It does not require USB-PD or Quick Charge protocols. The included cable is USB-A to USB-C; if using a USB-C to USB-C cable, ensure your power source supports 5V output.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"product-gallery\" style=\"margin: 30px 0; text-align: center;\"\u003e\n  \u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0503\/6412\/1244\/files\/S512db3da9adb4e14b662fcba23436f48V_080b92b7-32b8-410f-8c6e-6566d36b3738.webp?v=1782611502\" style=\"max-width: 100%; height: auto; margin-bottom: 10px;\" alt=\"Image 1\"\u003e\n  \u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0503\/6412\/1244\/files\/Sd318b02d6d7e4279871a5521590b92efe_c8415602-94c0-4914-ab7c-06a6beeb2038.webp?v=1782611502\" style=\"max-width: 100%; height: auto; margin-bottom: 10px;\" alt=\"Image 2\"\u003e\n  \u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0503\/6412\/1244\/files\/S3b3b4dbf15e546b4b7f5c269001a45deQ_160a9af3-40b6-4e09-bf24-73beee119353.webp?v=1782611502\" style=\"max-width: 100%; height: auto; margin-bottom: 10px;\" alt=\"Image 3\"\u003e\n  \u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0503\/6412\/1244\/files\/Sebeed24e83f841d7a61a54741c30ed075_83007e6b-f61b-40f9-8fa1-2e0ec391087b.webp?v=1782611502\" style=\"max-width: 100%; height: auto; margin-bottom: 10px;\" alt=\"Image 4\"\u003e\n  \u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0503\/6412\/1244\/files\/Sc44f194802aa40c6888e8d1ec1e41520t_58dee8ef-ee84-462c-93bf-0c44a1be2e01.webp?v=1782611502\" style=\"max-width: 100%; height: auto; margin-bottom: 10px;\" alt=\"Image 5\"\u003e\n  \u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0503\/6412\/1244\/files\/S714eed63b82b4bffa6d5a18d940eb1b3o_a143e288-ff9f-409e-90aa-0e36a6294964.webp?v=1782611502\" style=\"max-width: 100%; height: auto; margin-bottom: 10px;\" alt=\"Image 6\"\u003e\n  \u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0503\/6412\/1244\/files\/Sfe8386dc2e054c03af227e7c9e849ab1H_896d32e8-3893-4b15-a1c2-40f3c4d91469.webp?v=1782611502\" style=\"max-width: 100%; height: auto; margin-bottom: 10px;\" alt=\"Image 7\"\u003e\n  \u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0503\/6412\/1244\/files\/S1b0ffbf3d491454dad6ce3e41df77215Y_34eba2ad-ce63-4bea-b6a6-91f7019e7d4f.webp?v=1782611502\" style=\"max-width: 100%; height: auto; margin-bottom: 10px;\" alt=\"Image 8\"\u003e\n  \u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0503\/6412\/1244\/files\/Sc3270eb52e8c489aac856f6577ad596as_bb7cce55-044e-4527-b0de-8e8edb2fbca6.webp?v=1782611502\" style=\"max-width: 100%; height: auto; margin-bottom: 10px;\" alt=\"Image 9\"\u003e\n\u003c\/div\u003e\u003cscript type=\"application\/ld+json\"\u003e\n{\n  \"@context\": \"https:\/\/schema.org\",\n  \"@type\": \"Product\",\n  \"name\": \"The Zephyr Core | 1200mAh Rechargeable Desktop Circulator Fan — 100-Speed Variable Control\",\n  \"description\": \"Portable desktop air circulator with 100-speed stepless control, 1200mAh USB-C battery, 360-degree angle, and ultra-quiet brushless motor. 2-8 hours cordless, ideal for office, bedside, travel, and workshop use.\",\n  \"sku\": \"1005012324428402-1200mAh\",\n  \"brand\": {\"@type\": \"Brand\", \"name\": \"EastSupplier\"},\n  \"offers\": {\n    \"@type\": \"Offer\",\n    \"price\": \"28.70\",\n    \"priceCurrency\": \"USD\",\n    \"availability\": \"https:\/\/schema.org\/InStock\",\n    \"url\": \"https:\/\/eastsupplier.com\/products\/the-zephyr-core-rechargeable-circulator-fan\"\n  }\n}\n\u003c\/script\u003e","brand":"EastSupplier Platform","offers":[{"title":"1200mAh","offer_id":50496188645599,"sku":"1005012324428402-1200mAh","price":28.7,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0503\/6412\/1244\/files\/S512db3da9adb4e14b662fcba23436f48V_080b92b7-32b8-410f-8c6e-6566d36b3738.webp?v=1782611502","url":"https:\/\/eastsupplier.com\/en-kr\/products\/the-zephyr-core-rechargeable-circulator-fan","provider":"EastSupplier Platform","version":"1.0","type":"link"}