The recall covers OCOOPA rechargeable lithium-ion battery hand warmers with model numbers UT3053, UT3056, ZLS-118, ZLS-118S, ZLS-118D, H01 and H01(PD). The hand warmers were sold in pairs with magnetic attachments, a USB-C charging cable and adjustable heat settings. The model number and three-digit batch number are printed on the underside of each device.
The products were sold online through Amazon, Ocoopa.com, Ocoopa.net and Walmart.com between September 2018 and May 2026 for $15 to $60.