{"pageUrl":"https://comparethespecs.com/zh/fitness-outdoors/fitness-trackers-gps/which-running-watch-offers-the-best-heart-rate-monitoring-features","lastUpdated":"2026-09-03","totalProducts":1,"niche":"哪款跑步手表提供最佳的心率监测功能？","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":"适合追求强大心率监测功能的跑者，配备 Gen 4 光学传感器、持续心率追踪、腕部心电图，并兼容 Bluetooth 心率带。"}]}