{"product_id":"geoid-armband-heart-rate-monitor-hs800-hrm-fitness-tracker-hr-sensor-hs500-chest-strap-exercise-cycling-sport-yoga-accessories","title":"GEOID Heart Rate Monitor for Fitness \u0026 Cycling, HS800 Armband \/ HS500 Chest Strap","description":"\u003ch1\u003eGEOID HS800 Optical Armband Heart Rate Monitor\u003c\/h1\u003e\n\n\u003cp\u003e\u003cstrong\u003eAccurate Real-Time Heart Rate Monitoring for Fitness \u0026amp; Cycling\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eThe HS800 uses advanced photoelectric dual-beam technology to detect heart rate with ±1 BPM accuracy across a 40–220 BPM range. By measuring how hemoglobin absorbs and reflects light at different oxygen levels, you get precise data to optimize your training zones and maximize workout effectiveness.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eDual Connectivity: Bluetooth \u0026amp; ANT+\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eConnect simultaneously to multiple devices—smartwatches, cycling computers, fitness apps (Zwift, Strava, Wahoo Fitness, TrainerRoad, and more), and gym equipment. Choose the protocol that works best for your training setup.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eUltra-Lightweight \u0026amp; Comfortable\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eAt just 20g total (11g sensor + 9g arm strap), the HS800 feels barely there during exercise. The adjustable Lycra band with Velcro fastening fits arm circumferences from 19.5–30.5cm and moves with you without restriction—no chest strap needed.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003e45+ Hour Battery Life\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eExtended continuous monitoring for multi-day training blocks. Fast magnetic charging keeps you workout-ready.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eIP67 Waterproof \u0026amp; Sweat-Resistant\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eTrain hard in any condition. The sensor maintains precision during heavy sweating, rain, and water exposure.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eKey Specs:\u003c\/strong\u003e Bluetooth \u0026amp; ANT+ | ±1 BPM accuracy | 40–220 BPM range | 45h battery | IP67 waterproof | Magnetic charging | Adjustable 19.5–30.5cm armband\u003c\/p\u003e","brand":"Emarah Collective","offers":[{"title":"HS800 Wristband HRM","offer_id":58981374787916,"sku":"14:366#HS800 Armband HRM","price":66.15,"currency_code":"EUR","in_stock":true},{"title":"HS500 Chest HRM","offer_id":58981374820684,"sku":"14:350852#HS500 Chest HRM","price":37.83,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1065\/2359\/0988\/files\/S25acd73a51ee45c4b2c5bc1222220b717.webp?v=1790691347","url":"https:\/\/emarahcollective.com\/products\/geoid-armband-heart-rate-monitor-hs800-hrm-fitness-tracker-hr-sensor-hs500-chest-strap-exercise-cycling-sport-yoga-accessories","provider":"Emarah Collective","version":"1.0","type":"link"}