In line with the aesthetically pleasing design, I would discourage users from storing them away when not in use (and certainly not in an upright position) otherwise it will throw off the unit's measurements, requiring a number of recalibrations before resuming accurate readings. Wisely eschewing integrated batteries, Aria 2 requires four AA batteries, which I've yet to replace in nearly eight weeks of use.

Upgraded with Wi-Fi 802.11b/g/n (2.4GHz) module, Aria 2 syncs rather flawlessly to the Fitbit cloud, integrating it alongside data from any other Fitbit devices you might own to present a fuller account of your personal fitness.