If your unsure of which strap size to select please follow the details below to assist you.

Small fits: 14-16 cm

Medium fits: 16-19 cm

Large fits: 19-22 cm

We advise you measure the circumference of your wrist with a tape measure. Or use a piece of string and then measure that against a ruler.

* Please note rubber straps for the UR-100 models only come in one length, that need to be cut to size.