I can't award 5 stars because the software is every bit as important and is disappointing. Sleep monitoring is rubbish...step tracking seems accurate. Band has already cracked, which seems premature. This pricing according to color is ridiculous...and this is only one of zillions of products to be dealt with this way. Watch and software pairs and syncs well on the fly so I didn't have to use Bluetooth continuously which is such a battery drain. I would consider buying this again if the need arises. Watch/tracker consumption reasonable and keeps great time. Now that I need to replace the band, it is nowhere to be found,  which is really aggravating.