First, fast delivery as dab with Amazon.
I have not used the smartband, I want to clarify, so I will correct my review in positive (i hope) thereafter.
My disappointment comes from unpacking the product.
I was immediately attracted by this model colorful "green and yellow green" to ultimately have a bracelet in the colors AFESD !!
Disappointed especially the "yellow green" interior that is not really top.
I hope to be conquered for use but for the time (before use) bah .... here is what is blah!
The pictures make it much better, so do not rely too.