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Free Standard shipping $99+ | Shop now pay later with Klarna

Timex IRONMAN R300 GPS Smartwatch - Light Grey/Silver Tone [TW5M37700]

by Timex

Save 3%
Original price $129.00
Current price $125.00

IRONMAN® R300 GPS Smartwatch - Light Grey/Silver Tone

Meet Your Personal Trainer. We know there’s no finish line. That’s why we built our TIMEX® IRONMAN® R300 GPS watch for constant improvement. This smartwatch is packed with a powerhouse battery, guided workouts from elite athletes and coaches, continuous optical heart rate monitoring, and more delivering a range of performance metrics to help you tune your workouts and reach your running goals. The crisp sunlight-readable display, simple user interface, and robust mobile connectivity come together for a made-for-sports smartwatch that will have no trouble keeping up with you.


  • Timex Smart
  • Fast Accurate GPS
  • Accurate On-Wrist Heart Rate
  • Guided Coaching Activity Tracking
  • Easy-to-Use Menus
  • Soft Silicone Rubber Strap
  • Customizable Vibrating Alarm
  • TapScreen™ Technology
  • Water Resistant to 50 Meters


  • Case Width: 41 mm
  • Case Material: Resin
  • Band Color: Other
  • Buckle/Clasp: Buckle
  • Case Color: Silver-Tone
  • Case Finish: Matte
  • Case Shape: Square
  • Case Size: Full Size
  • Crystal/Lens: Mineral Glass
  • Dial Color: Digital
  • Dial Markings: Digital
  • Watch Movement: Digital
  • Water Resistance: 50 meters
  • Case Special: Indiglo
  • Band Special Feature:: Stainless Steel Buckle
  • Case Height: 11 mm
  • Strap and Lug Width: 24 mm
  • Attachment Hardware Color: Stainless Steel