Fitbit Ace, Garmin Vivofit Jr 2. Tech specs. Size, One size: Fits wrists 125mm – 161mm in circumference. Width 15 mm, Circumference: 136 mm. Bands: Regular .
When comparing Fitbit Zip vs Garmin Vivofit Jr, the Slant community recommends Garmin Vivofit Jr for most people. In the questionâ€œWhat are the best fitness .