Did you purchase a Fitbit Force? Did you develop a rash on your wrist?
Apparently Fitbit has issued a voluntary recall on the Fitbit Force and has stopped sales on this product. You can still get the Fitbit Flex (which is a wrist-worn Fitbit without the digital display)
From the Fitbit website:
Skin Sensitivity Notice
A small percentage of Fitbit Force users have reported skin redness, swelling, itchiness or other skin irritations. If you experience these symptoms, please discontinue use. If symptoms persist, see a physician. For more information, please visit our FAQ or contact firstname.lastname@example.org.
What is the latest information regarding Force?
Because Fitbit received reports of skin irritation from a small percentage of Force users, we have decided to stop sales of Force and conduct a voluntary recall.