How do I know my watch strap size?

The easiest way to check your band size is to check the back of the band for any stampings that would indicate the size (like the sample below). If there is no indication of the size on the back of your old band, then make a measurement between the lugs where the band attaches to the watch (like the sample below).

How do you change a Timex band?

Turn the watch over so the back side is facing up. Push the pin lever (one lever is located at each end of the watchband) inward. Release the band from the watch. Install the new band in the reverse order.