A: An inferior vena cava filter is a cone-shaped metal device that prevents blood clots from traveling to the lungs, according to Cleveland Clinic. Doctors place this device in the inferior vena cava to catch blood clots that have broken loose, explains the University of Michigan Health System.
Fitbit Blaze requires a maximum of 1 â 2 hours to charge fully. It comes with a rechargeable lithium-polymer battery. Since itâs a smartwatch comes with the fitness tracker. The Fitbit Blaze has the improved battery life and it can go up to 4-5 days per charge.
At a time when fitness bands keep getting cheaper, Fitbit is moving in the opposite direction with its new Fitbit Charge, Charge HR, and Surge fitness trackers.ompared to the $100 Fitbit Flex, the Charge has a taller and wider display, allowing it to show time and step count, and it has longer battery life of seven days on a charge. It also has automatic sleep tracking, so users don't have to tell the device when they're going to bed.