Fitbit Force

Wearable fitness trackers are everywhere, but none tops the Fitbit Force in accuracy and ease of use. The refresh of the popular Flex model is water-resistant and boasts a bright OLED screen for displaying stats like number of steps taken and stairs climbed throughout the day. In addition, there's a height-tracking altimeter built into the band, which means much more accurate calorie crunching. [$130; fitbit.com]