I've been using the Blaze for about 3 weeks and it's inaccuracy is extremely frustrating. I walk a well-defined 6.2 mile route usually every day and the Blaze never gets the distance correct. Also, it has started disconnecting from GPS on my iPhone 6. I've tried several steps to improve the accuracy (e.g. entering my stride length) but nothing has helped. It's fine a telling time but right now that's all it's good for. I'm very disappointed with the device and I'm thinking about possibly returning it.