Caveat: As a motivational tool for more exercise in everyday Fitbit is very good. You can set goals and when you reach it, vibrates the Flex and the diodes shine. Also very nice is the motivation assistance for the achievement of kilometers covered. There then repeatedly "trophies". The product may therefore be a great companion, but the device is very sensitive. Mir has already gone to the second Flex broken within half a year, there's nothing more. Fitbit promises that the device is waterproof and can be used while showering and normal swimming (do not immerse). Unfortunately, this statement is not correct, because the first tracker is "flooded" me while swimming in the truest sense of the word. Now I have started the Flex no longer swim, but when showers and also that he did not survive over time. At least the equipment should withstand the showers, since condensation reach even in normal sporting activities in the shaft of the band and thus the flex of moisture is exposed. For the measurements and motivation I would give 4 stars because there are still a few small tweaks. But for a 100, - EUR expensive device can be expected that it has more than just 1/4 year lifespan. Therefore I can not give more than 1 star unfortunately.
