The most significant feature of the £69.99 (inc. VAT) Garmin Vivofit 4 is probably the year-long battery life from its user-replaceable SR43 batteries. This means there's no need to carry a charge cable. As a regular wearer of activity trackers since they first became available, this has been a very long time coming, and it's fabulous that it's finally arrived. How nice it is to go away for a week and not have to pack a proprietary charge cable for my wristband.
Garmin Vivofit 4 at ZDNet
