Wellograph Wellness Watch with Heart Rate Monitor - Black Chrome (Certified Refurbished) Thin,Sleek, Stunning: The Wellograph features a domed sapphire crystal display, with a machined stainless steel upper case and anodized aluminum lower case. The all-weather genuine leather strap provides a secure fit. Precise Heart Monitoring: Equipped with a TriLED Heart Rate Sensor integrated into a soft spherical surface, Wellograph's unique hardware replicates the action of a human finger taking a pulse. How fit are you?: View stats on how much you walked today versus yesterday. See what your current pace is no matter the activity. And review a detailed summary of all your hard work in one view. Long Battery Life: The watch lasts up to two weeks on a single, full charge at continuous use. When time comes to charge, just drop the watch onto the included magnetic dock and charge away.