One of the questions that I've been asked about the Garmin Forerunner 201 is how big is it? I took out my ruler and measured its dimensions, and I also took a few photographs of it next to a Polar S-710 heart rate monitor for comparison.
The GPS unit that you wear on your wrist is 3 1/4 inches wide x 1 3/4 inches high x 11/16 inch thick (8.25 cm x 4.45 cm x 1.75 cm). The wrist strap is 10 1/4 inches long x 1 1/4 inches wide (26.04 cm x 3.18 cm). It weighs 2.8 ounces (79.37 g) with the wrist strap attached.
By comparison, the Polar S-710 HRM receiver is 1 13/16 inches wide x 1 3/4 inches high x 9/16 inch thick (4.60 cm x 4.45 cm x 1.43 cm). When the receiver is attached, its wrist strap is approximately 10 1/2 inches long x 1 3/8 inch wide at its widest point (26.67 cm x 3.49 cm). The S-710 receiver weighs 1.9 ounces (53.86 g) with the wrist strap attached.
More specifications for the Garmin Forerunner 201 are available on the Garmin website.
The photos shown here are thumbnails. Click on either of them if you want to see the full sized image.