If running is your hobby , you should have a digital rubber wristband. A sport digital rubber wristband is a digital chip putting in the rubber band part.
The biggest advantage of the digital rubber wirstband for sports is the high step counting accuracy , more stability of 50 meters waterproof ,  the long life time built-in battery and also comfortable and durable as it is the silicone made material.
A sport digital rubber wristband is the assistant of good health to remind you of sporting.