{"product_id":"fitbit-sense-2-advanced-health-smartwatch-graphite-fb521bkgb-us","title":"Fitbit - Sense 2 Advanced Health Smartwatch - Graphite - FB521BKGB-US","description":"\u003cp\u003e\u003cspan id=\"docs-internal-guid-273097c9-7fff-45e6-4a8c-d591eb97bf9e\"\u003e\u003c\/span\u003e\u003c\/p\u003e \u003cp\u003eThe Fitbit Sense 2 is a multifunction smartwatch designed with a graphite finish and built-in sensors for motion, temperature, and heart rate trend tracking. With a bright AMOLED touchscreen, built-in GPS, and support for smartphone notifications and voice assistants, it offers a feature-rich experience in a compact, water-resistant design.\u003c\/p\u003e \u003chr\u003e \u003cp\u003e\u003cstrong\u003eKey Features:\u003c\/strong\u003e\u003c\/p\u003e \u003cul\u003e \u003cli\u003e \u003cp\u003e\u003cstrong\u003eEDA Sensor\u003c\/strong\u003e – Collects electrodermal activity data for surface-level skin response tracking (app access required).\u003c\/p\u003e \u003c\/li\u003e \u003cli\u003e \u003cp\u003e\u003cstrong\u003eBuilt-In GPS\u003c\/strong\u003e – Records pace and distance for outdoor activities without requiring a smartphone connection.\u003c\/p\u003e \u003c\/li\u003e \u003cli\u003e \u003cp\u003e\u003cstrong\u003eHeart Rate Sensor\u003c\/strong\u003e – Tracks heart rate trends continuously and provides high\/low notifications (not intended for medical use).\u003c\/p\u003e \u003c\/li\u003e \u003cli\u003e \u003cp\u003e\u003cstrong\u003eECG App\u003c\/strong\u003e – Records on-wrist heart rhythm data via app (availability varies by region; not for diagnostic purposes).\u003c\/p\u003e \u003c\/li\u003e \u003cli\u003e \u003cp\u003e\u003cstrong\u003eSpO₂ \u0026amp; Skin Temperature\u003c\/strong\u003e – Estimates overnight blood oxygen levels and skin temperature variations (data available in Fitbit app only).\u003c\/p\u003e \u003c\/li\u003e \u003cli\u003e \u003cp\u003e\u003cstrong\u003eSleep Tracking\u003c\/strong\u003e – Estimates time spent in various sleep stages and provides a daily sleep summary (viewable in the app).\u003c\/p\u003e \u003c\/li\u003e \u003cli\u003e \u003cp\u003e\u003cstrong\u003eSmart Notifications\u003c\/strong\u003e – Displays call, text, and app alerts when paired with a compatible phone.\u003c\/p\u003e \u003c\/li\u003e \u003cli\u003e \u003cp\u003e\u003cstrong\u003eVoice Assistant Support\u003c\/strong\u003e – Compatible with Amazon Alexa and Google Assistant (account setup required).\u003c\/p\u003e \u003c\/li\u003e \u003cli\u003e \u003cp\u003e\u003cstrong\u003eFitness Tracking\u003c\/strong\u003e – Tracks step count, motion intensity, and includes multiple exercise modes.\u003c\/p\u003e \u003c\/li\u003e \u003cli\u003e \u003cp\u003e\u003cstrong\u003eBattery Life\u003c\/strong\u003e – Lasts up to 6+ days per charge; fast charging provides one day of use in about 12 minutes.\u003c\/p\u003e \u003c\/li\u003e \u003cli\u003e \u003cp\u003e\u003cstrong\u003eWater Resistance\u003c\/strong\u003e – Rated up to 50 meters; suitable for swim activities.\u003c\/p\u003e \u003c\/li\u003e \u003c\/ul\u003e \u003chr\u003e \u003cp\u003e\u003cstrong\u003eSpecifications:\u003c\/strong\u003e\u003c\/p\u003e \u003cul\u003e \u003cli\u003e \u003cp\u003e\u003cstrong\u003eModel Number\u003c\/strong\u003e: FB521BKGB-US\u003c\/p\u003e \u003c\/li\u003e \u003cli\u003e \u003cp\u003e\u003cstrong\u003eColor\u003c\/strong\u003e: Graphite\u003c\/p\u003e \u003c\/li\u003e \u003cli\u003e \u003cp\u003e\u003cstrong\u003eDisplay\u003c\/strong\u003e: AMOLED touchscreen\u003c\/p\u003e \u003c\/li\u003e \u003cli\u003e \u003cp\u003e\u003cstrong\u003eBattery Life\u003c\/strong\u003e: Up to 6+ days (varies by usage)\u003c\/p\u003e \u003c\/li\u003e \u003cli\u003e \u003cp\u003e\u003cstrong\u003eCompatibility\u003c\/strong\u003e: iOS 13+ and Android 9.0+\u003c\/p\u003e \u003c\/li\u003e \u003cli\u003e \u003cp\u003e\u003cstrong\u003eWater Resistance\u003c\/strong\u003e: 5 ATM (up to 50 meters)\u003c\/p\u003e \u003c\/li\u003e \u003c\/ul\u003e \u003cp\u003e\u003cstrong\u003eSensors:\u003c\/strong\u003e\u003c\/p\u003e \u003cul\u003e \u003cli\u003e \u003cp\u003eECG (via app)\u003c\/p\u003e \u003c\/li\u003e \u003cli\u003e \u003cp\u003eEDA (Electrodermal Activity)\u003c\/p\u003e \u003c\/li\u003e \u003cli\u003e \u003cp\u003eOptical heart rate sensor\u003c\/p\u003e \u003c\/li\u003e \u003cli\u003e \u003cp\u003eSpO₂ sensor (data available in app only)\u003c\/p\u003e \u003c\/li\u003e \u003cli\u003e \u003cp\u003eSkin temperature sensor (variation only)\u003c\/p\u003e \u003c\/li\u003e \u003cli\u003e \u003cp\u003eAccelerometer\u003c\/p\u003e \u003c\/li\u003e \u003cli\u003e \u003cp\u003eAltimeter\u003c\/p\u003e \u003c\/li\u003e \u003cli\u003e \u003cp\u003eGyroscope\u003c\/p\u003e \u003c\/li\u003e \u003cli\u003e \u003cp\u003eAmbient light sensor\u003c\/p\u003e \u003c\/li\u003e \u003c\/ul\u003e \u003cp\u003e\u003cstrong\u003eConnectivity:\u003c\/strong\u003e\u003c\/p\u003e \u003cul\u003e \u003cli\u003e \u003cp\u003eBluetooth\u003c\/p\u003e \u003c\/li\u003e \u003cli\u003e \u003cp\u003eWi-Fi\u003c\/p\u003e \u003c\/li\u003e \u003cli\u003e \u003cp\u003eNFC (Fitbit Pay supported)\u003c\/p\u003e \u003c\/li\u003e \u003c\/ul\u003e \u003cp\u003e\u003cstrong\u003eDimensions\u003c\/strong\u003e: 1.58 x 1.58 x 0.45 inches\u003cbr\u003e\u003cstrong\u003eWeight\u003c\/strong\u003e: Approx. 1.3 oz\u003c\/p\u003e \u003chr\u003e \u003cp\u003e\u003cstrong\u003eWhat’s in the Box:\u003c\/strong\u003e\u003c\/p\u003e \u003cul\u003e \u003cli\u003e \u003cp\u003eFitbit Sense 2 Smartwatch – Graphite (FB521BKGB-US)\u003c\/p\u003e \u003c\/li\u003e \u003cli\u003e \u003cp\u003eSmall and Large Bands\u003c\/p\u003e \u003c\/li\u003e \u003cli\u003e \u003cp\u003eCharging Cable\u003c\/p\u003e \u003c\/li\u003e \u003c\/ul\u003e","brand":"MirMadina","offers":[{"title":"Excellent","offer_id":68088851955962,"sku":"FB521BKGB-US^A","price":52.82,"currency_code":"USD","in_stock":true},{"title":"Good","offer_id":68088851988730,"sku":"FB521BKGB-US^B","price":52.82,"currency_code":"USD","in_stock":true},{"title":"Eco-Save","offer_id":68088852021498,"sku":"FB521BKGB-US^C","price":52.82,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0775\/5287\/7818\/files\/3_63008623-118e-434c-92cc-4bbbc1f4a1fb.jpg?v=1793800485","url":"https:\/\/mirmadina.shop\/products\/fitbit-sense-2-advanced-health-smartwatch-graphite-fb521bkgb-us","provider":"MirMadina","version":"1.0","type":"link"}