{"pageUrl":"https://comparethespecs.com/fitness-outdoors/fitness-trackers-gps/which-running-watch-offers-the-best-heart-rate-monitoring-features","lastUpdated":"2026-09-03","totalProducts":1,"niche":"Which running watch offers the best heart rate monitoring features?","description":"Which running watch offers the best heart rate monitoring features?","products":[{"brand":"Polar","model":"Polar Grit X2","price_gbp":354.84,"origin_country":null,"specs":{"gps":"Dual-frequency GPS","barometer":true,"screen_size":"1.28 in","battery_life":"30 h","waterproof_depth":"50 m","heart_rate_monitor":"Gen 4 optical heart rate monitor"},"confidence_score":null,"sources":[{"label":"Polar","url":"https://www.polar.com/en/grit-x2","currency":"USD","source_country":"US","price":479.9,"price_gbp":354.84,"scraped_at":"2026-09-03T08:09:02.240635"}],"summary":"The Polar Grit X2 is a compact outdoor GPS watch with dual-frequency positioning, offline maps, an AMOLED touchscreen, and Polar Elixir biosensing. Its rugged design and extended GPS battery modes suit trail runners, hikers, and multisport athletes who want detailed training and recovery data.","ideal_for":"It suits runners seeking strong heart rate monitoring through its Gen 4 optical sensor, continuous heart-rate tracking, wrist ECG, and compatibility with Bluetooth heart-rate straps."}]}