The FitBit Force Hit the fitness market last fall and despite the hefty price tag the fitness watches took off.
"People love the product," says Fitbit Force Bracelet owner, Kim Riechelt.
She used the watch to walk with her dog.
This little wristband tracks how far you walk, how many stairs you climb, and how well you sleep.
Kim explains, "It was really motivating. It really does make you want to get up and move."
Kim noticed a mark on her arm after a couple weeks of donning the bracelet.
Kim remembers, "I woke up one morning with a rash. It was pretty obvious from where it was that it had to be from that."
Instead of just counting calories burned, Kim says the force caused a rash that looked more like a burn.
"On the 7th day it just opened up. It was disgusting. It was oozing and weeping," says Kim.
Kim is not alone. Cathy Spooner also got a force to help her train for an upcoming race.
"I probably had it on a week and a half and then I noticed it and I took it off the next day," recalls Cathy.
She still has a wound 17 days after she took the bracelet off.
The company does acknowledge a problem, but says it's limited. In emails with the company Kim says FitBit told here it may have been a reaction to nickel.
FitBit says users with sensitive skin may experience a problem.
"A limited percentage of our users have reported skin sensitivities when using the Fitbit Force. We are conducting a thorough investigation of the product and will provide additional information once our investigation is complete.
Kim says she does not have a nickel allergy and she doesn't know what caused her skin issue.
"I think more concerning than anything. [That] They don't know," says Kim.
I think they should stop selling it and take everything off the market and find out why people are getting these irritations," agrees Cathy.