FIRST, MEASURE YOUR WRIST
This will help you establish where your wrist falls on a scale of small to large, and is very crucial if you are buying your watch online and cannot try it on for size.
Get a tailor’s tape measure and measure around your wrist, above the bone, taking care that the tape is not too tight or too loose. In general, ladies’ or slender wrists are usually 6 inches or smaller, 6-7 inches are small to medium range, while 7.5 and above are large range.
Now that you know your wrist size, below are some factors to consider.