I like the COSVII Fitness Tracker very much. It has a large display that is easy to read. It has a heart rate monitor, blood pressure monitor, burned calorie counter, distance tracker and a step counter. It is easy to use. I charged the fitness tracker for 3 hours. The charge will last for 10 days. It can be charged on a computer. It is waterproof in many situations such as when it is raining or washing dishes but can't be used in the shower or for swimming.The fitness tracker has an app to be installed on your smart phone. It has to be paired with a smart phone to use it.I went for my daily walk using the fitness tracker and it showed how many steps I took and the distance I walked. There is a small instruction book that tells how to use the fitness tracker. This fitness tracker works well and I recommend it. #FRankBoosterReview ii, #Sponsored iii,#COSVII Fitness Tracker, https://www.amazon.com/gp/product/B07DG1VZDJ/ref=oh_aui_detailpage_o00_s00?ie=UTF8&psc=1