{"product_id":"sleep-tracker-ring-continuous-ppg-skin-temperature-biometric-ring-for-hrv-sleep-stage-analysis","title":"Smart Sleep Ring Tracker","description":"\u003cp\u003e\u003cstrong\u003eYour finger has 10× denser capillary access than your wrist — making it the most accurate place to read your body's overnight story.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cem\u003eWhy it works:\u003c\/em\u003e PPG optical sensors fused with skin-temperature deviation tracking measure true HRV-based sleep architecture directly from your finger's capillary-rich tissue — detecting REM, deep, and light cycles with precision that wrist straps simply can't match.\u003c\/p\u003e\n\u003ch3\u003eWhat it does\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaps your full sleep architecture.\u003c\/strong\u003e Identifies REM, deep, and light sleep stages using real HRV data, not just movement detection.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eReads signals wrist trackers miss.\u003c\/strong\u003e Finger capillaries are 10× denser than wrist tissue, giving the optical sensors a cleaner, stronger biometric signal.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eRuns silently all night.\u003c\/strong\u003e Low-profile ring design means no screen glare, no wrist pressure, and nothing interrupting the rest you're actually trying to measure.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDelivers a morning snapshot worth acting on.\u003c\/strong\u003e Wake up to a clear breakdown of your overnight recovery so you can make smarter decisions before your first coffee.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eHow to use\u003c\/h3\u003e\n\u003cp\u003eSlip the ring onto your preferred finger before bed — no setup rituals, no charging mid-night. It tracks continuously while you sleep and syncs your full sleep-stage report to the companion app by morning. Check your HRV trend, sleep score, and stage breakdown, then adjust your wind-down routine based on what's actually happening in your body.\u003c\/p\u003e\n\u003ch3\u003eWhat's included\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eSmart Sleep Tracker Ring\u003c\/li\u003e\n  \u003cli\u003eMagnetic charging dock\u003c\/li\u003e\n  \u003cli\u003eSizing kit (multiple fit options)\u003c\/li\u003e\n  \u003cli\u003eCompanion app access (iOS \u0026amp; Android)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cem\u003eHale \u0026amp; Co backs every order with our 60-day money-back guarantee. Free U.S. shipping over $50.\u003c\/em\u003e\u003c\/p\u003e","brand":"Hale \u0026 Co","offers":[{"title":"Default Title","offer_id":47862439641253,"sku":"GADS-SMART-SLEEP-RING-TRA","price":89.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0768\/6953\/3861\/files\/b4b9c4addb09403083dceb00d738bfc8.png?v=1780774083","url":"https:\/\/fq111a-u0.myshopify.com\/products\/sleep-tracker-ring-continuous-ppg-skin-temperature-biometric-ring-for-hrv-sleep-stage-analysis","provider":"Hale \u0026 Co","version":"1.0","type":"link"}