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.
The Fitbit Surge can expect a five to seven day battery life from its Lithium-polymer battery, Microsoft's Band offers just two days-and that's with various functions turned off. The Surge is IP68 certified and carries a water resistant rating of 5ATM, which means youâll have no problems wearing it in the pool.e recently put the Microsoft Band and the Fitbit Charge HR head to head but, given the GPS capabilities of one of 2015's most anticipated wearables-the Fitbit Surge-we thought it was only right that we order another showdown.