One of the things I really like about this design is that the USB plug is built right into the tracker. You just pull off the wrist band and plug it directly into any USB charger. There is no cable to fool with. So far I've been able to sync my steps with my phone, but I haven't figured out how to sync with my "friends" wearing Fitbits. However, this may have to go on the back burner for a while until I figure out a little more about my car. I swear, buying something new these days requires a degree in computer applications. Whatever happened to simple on/off switches?