{"product_id":"apple-watch-series-4-40mm-silver-aluminum-black-sport-band","title":"Apple Watch Series 4 40mm – Silver Aluminum\/Black Sport Band (Refurbished)","description":"\u003cdiv class=\"dg-pdp-content\"\u003e\n\u003cp\u003e\u003cstrong\u003eBuy a certified refurbished Apple Watch Series 4 40mm in Silver Aluminum\/Black Sport Band\u003c\/strong\u003e from $86 at Device Giant — every Watch Series 4 40mm is fully tested under our 25-point \u003cstrong\u003eTrueGrade\u003c\/strong\u003e inspection, ships unlocked-ready, and is backed by our 90-day warranty and free US shipping. The Apple Watch Series 4 40mm, released in 2018, marked a significant leap forward for Apple's wearable technology. It introduced a stunning edge-to-edge display that was 30% larger than its predecessors, all while maintaining a similar overall footprint. This model was the first Apple Watch to feature an Electrocardiogram (ECG) app, allowing users to take an on-demand ECG directly from their wrist, a groundbreaking health feature at the time. Compare grades, storage and carrier options below and save versus buying new.\u003c\/p\u003e\n\u003ch2\u003eWatch Series 4 40mm key features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eLarger Edge-to-Edge Display\u003c\/li\u003e\n\u003cli\u003eECG App (Electrical Heart Sensor)\u003c\/li\u003e\n\u003cli\u003eFall Detection\u003c\/li\u003e\n\u003cli\u003eFaster S4 Dual-Core Processor\u003c\/li\u003e\n\u003cli\u003eSwimproof (Water resistant 50m)\u003c\/li\u003e\n\u003cli\u003eGPS, GLONASS, Galileo, QZSS\u003c\/li\u003e\n\u003cli\u003eOptional Cellular Connectivity\u003c\/li\u003e\n\u003cli\u003eEmergency SOS\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eWatch Series 4 40mm full specifications\u003c\/h2\u003e\n\u003ctable style=\"border-collapse:collapse;width:100%;max-width:640px\"\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth style=\"text-align:left;padding:6px 12px;border-bottom:1px solid #eee;white-space:nowrap\"\u003eDisplay\u003c\/th\u003e\n\u003ctd style=\"padding:6px 12px;border-bottom:1px solid #eee\"\u003e1.57 inches LTPO OLED Retina display, 394 x 324 pixels, 60Hz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth style=\"text-align:left;padding:6px 12px;border-bottom:1px solid #eee;white-space:nowrap\"\u003eProcessor\u003c\/th\u003e\n\u003ctd style=\"padding:6px 12px;border-bottom:1px solid #eee\"\u003eApple S4 with 64-bit dual-core processor\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth style=\"text-align:left;padding:6px 12px;border-bottom:1px solid #eee;white-space:nowrap\"\u003eRAM\u003c\/th\u003e\n\u003ctd style=\"padding:6px 12px;border-bottom:1px solid #eee\"\u003e1GB\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth style=\"text-align:left;padding:6px 12px;border-bottom:1px solid #eee;white-space:nowrap\"\u003eStorage\u003c\/th\u003e\n\u003ctd style=\"padding:6px 12px;border-bottom:1px solid #eee\"\u003e16GB\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth style=\"text-align:left;padding:6px 12px;border-bottom:1px solid #eee;white-space:nowrap\"\u003eRear camera\u003c\/th\u003e\n\u003ctd style=\"padding:6px 12px;border-bottom:1px solid #eee\"\u003eN\/A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth style=\"text-align:left;padding:6px 12px;border-bottom:1px solid #eee;white-space:nowrap\"\u003eBattery\u003c\/th\u003e\n\u003ctd style=\"padding:6px 12px;border-bottom:1px solid #eee\"\u003e225 mAh, Magnetic charging cable\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth style=\"text-align:left;padding:6px 12px;border-bottom:1px solid #eee;white-space:nowrap\"\u003eBuild\u003c\/th\u003e\n\u003ctd style=\"padding:6px 12px;border-bottom:1px solid #eee\"\u003eAluminum case or Stainless Steel case, Ceramic and sapphire crystal back, Water resistant 50 m\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth style=\"text-align:left;padding:6px 12px;border-bottom:1px solid #eee;white-space:nowrap\"\u003eOperating system\u003c\/th\u003e\n\u003ctd style=\"padding:6px 12px;border-bottom:1px solid #eee\"\u003eApple Watch OS\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth style=\"text-align:left;padding:6px 12px;border-bottom:1px solid #eee;white-space:nowrap\"\u003eNetwork\u003c\/th\u003e\n\u003ctd style=\"padding:6px 12px;border-bottom:1px solid #eee\"\u003e4G LTE and UMTS (Cellular models only)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth style=\"text-align:left;padding:6px 12px;border-bottom:1px solid #eee;white-space:nowrap\"\u003eBiometrics\u003c\/th\u003e\n\u003ctd style=\"padding:6px 12px;border-bottom:1px solid #eee\"\u003eWrist detection, Passcode\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth style=\"text-align:left;padding:6px 12px;border-bottom:1px solid #eee;white-space:nowrap\"\u003eDimensions\u003c\/th\u003e\n\u003ctd style=\"padding:6px 12px;border-bottom:1px solid #eee\"\u003e40 x 34 x 10.7 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth style=\"text-align:left;padding:6px 12px;border-bottom:1px solid #eee;white-space:nowrap\"\u003eWeight\u003c\/th\u003e\n\u003ctd style=\"padding:6px 12px;border-bottom:1px solid #eee\"\u003e30.1 g\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\n\u003ch2\u003eWhy buy a refurbished Watch Series 4 40mm?\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSave big\u003c\/strong\u003e — a used Watch Series 4 40mm starts at just $86, well below retail.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e25-point TrueGrade tested\u003c\/strong\u003e — battery, screen, cameras, buttons and network all verified.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e90-day warranty \u0026amp; free shipping\u003c\/strong\u003e on every Watch Series 4 40mm.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBetter for the planet\u003c\/strong\u003e — buying refurbished keeps e-waste out of landfills.\u003c\/li\u003e\n\u003cli\u003eUpgrade to a newer Apple Watch model with more advanced features.\u003c\/li\u003e\n\u003cli\u003eGet cash for your device, which still holds value due to its health and safety features.\u003c\/li\u003e\n\u003cli\u003eThe Series 4 offers a premium smartwatch experience for those looking for an upgrade.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eWatch Series 4 40mm pros and cons\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003ePros\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eGroundbreaking ECG and Fall Detection features\u003c\/li\u003e\n\u003cli\u003eSignificantly larger display than previous models\u003c\/li\u003e\n\u003cli\u003eFast and responsive performance with S4 chip\u003c\/li\u003e\n\u003cli\u003eExcellent fitness and activity tracking\u003c\/li\u003e\n\u003cli\u003eOptional cellular connectivity for independence from iPhone\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eThings to know\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eBattery life is typical for a smartwatch (up to 18 hours)\u003c\/li\u003e\n\u003cli\u003eNo always-on display (introduced in Series 5)\u003c\/li\u003e\n\u003cli\u003eOlder model, lacks some newer features like Blood Oxygen sensor\u003c\/li\u003e\n\u003cli\u003eRequires an iPhone for full functionality\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eCarrier compatibility\u003c\/h2\u003e\n\u003cp\u003eThis refurbished Watch Series 4 40mm is available \u003cstrong\u003eunlocked\u003c\/strong\u003e and compatible with GPS+CELL. Check the carrier selector above — we only show options we have in stock so you can buy the exact Watch Series 4 40mm that works on your network.\u003c\/p\u003e\n\u003ch2\u003eStorage options\u003c\/h2\u003e\n\u003cp\u003eChoose the Watch Series 4 40mm in 16GB. Pick more storage for photos, apps and offline media.\u003c\/p\u003e\n\u003ch2\u003eTrueGrade condition guide\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eGrade A — Excellent:\u003c\/strong\u003e like-new, minimal to no visible wear.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGrade B — Great:\u003c\/strong\u003e light signs of use, fully functional.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGrade C — Fair:\u003c\/strong\u003e visible wear at the best price.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAs-is \/ damaged:\u003c\/strong\u003e clearly described cosmetic or functional notes, priced accordingly.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eWatch Series 4 40mm — frequently asked questions\u003c\/h2\u003e\n\u003ch3\u003eIs the Apple Watch Series 4 40mm still worth buying in 2026?\u003c\/h3\u003e\n\u003cp\u003eYes — with Larger Edge-to-Edge Display and a proven design, the Watch Series 4 40mm remains a great-value refurbished phone, especially at $86 with a 90-day warranty.\u003c\/p\u003e\n\u003ch3\u003eDoes the refurbished Watch Series 4 40mm come unlocked?\u003c\/h3\u003e\n\u003cp\u003eMost Watch Series 4 40mm units are sold unlocked and ready for GPS+CELL. Carrier-specific versions are clearly labeled in the carrier selector.\u003c\/p\u003e\n\u003ch3\u003eHow much does a used Watch Series 4 40mm cost?\u003c\/h3\u003e\n\u003cp\u003eAt Device Giant a refurbished Watch Series 4 40mm starts from $86, with the exact price depending on storage, carrier and TrueGrade condition.\u003c\/p\u003e\n\u003ch3\u003eWhat's included with a refurbished Watch Series 4 40mm?\u003c\/h3\u003e\n\u003cp\u003eYour Watch Series 4 40mm ships fully reset and tested with a compatible charging cable, a 90-day warranty and free shipping. Accessories vary by condition.\u003c\/p\u003e\n\u003ch3\u003eWhat do the condition grades mean?\u003c\/h3\u003e\n\u003cp\u003eSee the TrueGrade guide above — A (excellent), B (great), C (fair) and clearly-described as-is options, so you can pick the right balance of price and cosmetics for your Watch Series 4 40mm.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Apple","offers":[{"title":"16GB \/ GPS+CELL \/ Grade C — Fair","offer_id":49921329234149,"sku":"iWS440M-GPSPCEL-16-SABSB-C","price":85.94,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0287\/4913\/5965\/files\/09d12d93df6ece9b45b229ca5818d078.png?v=1782940856","url":"https:\/\/devicegiant.com\/products\/apple-watch-series-4-40mm-silver-aluminum-black-sport-band","provider":"Device Giant","version":"1.0","type":"link"}