Anillo inteligente con pantalla a color R12 para hombre y mujer, anillo inteligente para fitness con control del ritmo cardíaco y del oxígeno en sangre, resistente al agua IP68

How to choose your size - Measuring Finger Method Step 1: When measuring,please choose a thin,non-stretchy wire and wrap it around your finger and mark it with a pen or other tool. Step 2 : Straighten the thin wire and measure its length with a ruler and shop against the ring specifications bove. Warm Reminder : Typically, sizes 8 are suitable for women and 9-12 are suitable for most men's sizes. Please measure your finger size before purchasing to avoid inappropriate size