DO YOU PREFER A DISPLAY?
UNLIKE THE VERY basic clip-on activity trackers, the Fitbit One has some higher-end features, as well as a large OLED display. Core functionality is provided by a 3-axis accelerometer, but the One also has an altimeter, for measuring altitude changes. While it’s designed as a clip-on tracker, it comes with a sleep band, and there is a large range of third-party accessories available. Importantly, the One has a vibration motor, so can give gentle feedback on goals or help wake you at the optimum time. The device is sweat proof, but not designed for swimming, and has a rechargeable battery that lasts almost two weeks. The One is quite large, and measures in at 48mm long, 9.65mm thick and 19.3mm wide.
As expected from Fitbit, the fitness tracking app is top notch, and one of the most fully featured options available, and has a great social competitive mode. The One does need to be clipped on securely, but offers quite accurate tracking and is less affected by wrist movements.
OLED screen; vibration alerts and alarms; water resistant; altimeter; sleep band; Fitbit app; 48x 9.65 x 19.3mm