HWHMH Replacement Band/Replacement Clip Holder for Fitbit One (No Tracker) (Black)Replacement Band for Fitbit One. Specially designed for Fitbit One only. No tracker. Adjustable wristband and wristwatch style. Fix the tracker fall off problem. One size fits most wrists size. Designed to fit most wrists (6.3"- 8.25"). Simple and functional, keep you..