Actual colors may differ slightly.

Actual colors may differ slightly.


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The new EFR545 series of timepieces are powered Casio’s Tough Solar technology. These eco-friendly solar battery-powered timepieces can be charged even in low or fluorescent light, eliminating the need for continuous battery changes.

In addition, the EFR545 series of watches come equipped with a 1/5th second chronograph, tachymeter, 12/24 hour sub-dial, and are water resistant up to 100 meters and also feature a low battery alert.

  • 100M Water Resistant
  • Tough Solar Power
  • 1/5 Second Stopwatch
  • Date Display


Operation Guide


  • Tough Solar Power
  • 100M Water Resistant
  • 1/5 second stopwatch
  • Measuring capacity: 59'59.8"
  • Measuring modes: Elapsed time, split time and two finish times
  • Tachymeter
  • 12/24 hour formats
  • Mineral Glass
  • Screw Lock Back
  • Resin Band (EFR545SB & EFR545SBPB)
  • Solid Stainless Steel Band (EFR545BD & EFR545SBDB)
  • One-touch 3-fold buckle (EFR545BD & EFR545SBDB)
  • Stainless Steel Case
  • Stainless Steel Bezel
  • Low battery warning
  • Accuracy: �20 seconds per month (with no signal calibration)
  • Storage battery: Solar rechargeable battery
  • Power saving function
  • Approx. battery life: 6 months on full charge (without further exposure to light)
  • Module: 5274