Forerunner® 645 Music - Cerise with Stainless Hardware

Forerunner® 645 Music - Cerise with Stainless Hardware


GPS Running Smartwatch with Music and Contactless Payments                  

  • Easily download up to 500 songs to your watch, and connect with Bluetooth® headphones (sold separately) for phone-free listening
  • Syncs music from select streaming services for offline listening¹
  • Garmin Pay™ contactless payment solution² lets you make convenient payments with your watch, so you can leave your cash and cards at home
  • Provides advanced running dynamics³, including ground contact time balance, stride length, vertical ratio and more
  • Uses wrist-based heart rate4 to offer performance monitoring features, including evaluating your current training status
  • Battery life5: up to 7 days in smartwatch mode; 5 hours in GPS mode with music
    Lens Material

    Corning® Gorilla® Glass 3

    Bezel Material

    stainless steel

    Quick Release Bands yes (20 mm, Industry standard)
    Strap material


    Physical size

    42.5 x 42.5 x 13.5 mm

    Fits wrists with a circumference of 127-204 mm

    Display size 1.2" (30.4 mm) diameter
    Display resolution 240 x 240 pixels
    Display type sunlight-visible, transflective memory-in-pixel (MIP)

    42.2 g

    Battery life Smartwatch Mode: Up to 7 days
    GPS mode with music: Up to 5 hours
    GPS mode without music: Up to 14 hours
    Water rating 5 ATM
    Color display
    Memory/History 200 hours of activity data