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GarminFenix 6X Sapphire Heart Rate Monitor


Item # GRMF00W

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  • Carbon Gray DLC/Black Band, One Size ($849.99)
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Item # GRMF00W

Fenix 6X Sapphire Heart Rate Monitor

If you're looking for a watch that can handle extended missions in the mountains, look no further. With unmatched durability and insanely long, customizable battery life, it's got the performance you need when you're far from home, as well as the everyday and exercise features you need for everything else.

  • Ultra-tough watch with extended battery life for multi-day missions
  • Allows access to multiple global navigation satellite systems
  • PacePro and ClimbPro features keep you prepared for changing terrain
  • Heart-rate monitor and performance metrics add insight to workouts
  • Map function includes preloaded ski maps and golf courses
  • Syncs with streaming services and stores up to 2,000 songs
  • Changeable battery modes match the needs of your current activity
  • Suggested route-planning and navigation services for road running
  • Weather tracking, altimeter, and compass for rugged trail trips
  • ProX Sapphire model has unmatched durability and longer battery life

California Proposition 65


Cancer and Reproductive Harm -

Tech Specs
Housing Material
steelm fiber-reinforced polymer with metal rear cover
Strap Material
Face Material
Sapphire Crystal
Technical Features
PacePro technology, advanced training metrics, preloaded sport modes, TOPO and ski maps, ClimbPro features, preloaded golf courses, turn-by-turn directions, multi-GNSS support, music apps, safety and tracking features, Garmin pay service, smart notifications, heart rate, energy monitor, Pulse OX sensor
Date Indicator
10 ATM
Battery Type
rechargeable lithium
Battery Life
[smartwatch mode] up to 21 days, [GPS mode] up to 60 hours, [GPS and music mode] 120 hours, [expedition mode] 46 days, [battery saver watch mode] 80 days
charging/data cable, documentation
Recommended Use
running, training, mountain biking, cycling, backpacking, hiking, climbing, casual, skiing, snowboarding, golf
Manufacturer Warranty
1 year

Claimed Weight

Claimed weights are provided by the vendor.

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    What do you think about this product?


    >Rating: 3

    Issues with heart rate tracking

    I've used it several times
    True to size

    I've had some pretty significant issues with the optical heart rate monitor giving false low, or erratic readings while on training. For example, when doing a climb my heart rate was lower on the ascent than the descent. If you look over on the Garmin forums they seem to be having significant firmware issues that haven't been resolved for 8 months. Other than that very core feature the watch is pretty awesome! I'm bummed but will return.


    Is this the 42mm Fenix 6? I don't see a size in the description. Thanks


    Hi Please watch has multiple language? I need Czech. Thank you for your answer.

    Ano, česky je možnost jazyka.