The recall is for the Fitbit Ionic Smartwatch. About one million have been sold in the U.S.

These watches were sold from September 2017 through December 2021 at Best Buy, Kohl’s, Target, and other stores nationwide, including online through Amazon and Fitbit.

The watches contain a lithium-ion battery, which can overheat and lead to a burn hazard.

The following models/colors are affected by the recall:

• Ionic FB503CPBU – slate blue/burnt orange
• Ionic FB503GYBK – charcoal/smoke gray
• Ionic FB503WTGY – blue gray/silver gray
• Ionic FB503WTNV – Adidas edition, ink blue & ice gray/silver gray

The model number is located on the back of the watch near where the band attaches.

If you have one of these smart watches, you’re instructed to stop using it and contact Fitbit to get pre-paid packaging to return it.

After returning, customers will get a $299 refund. Participating customers will also get a 40% discount code for select Fitbit devices.

Call Fitbit toll-free at 888-925-1764 or click here to begin your return.