SaferProducts incident

Failure type

Overheating

Incident narrative

SaferProducts.gov consumer incident report 20260410-5D850-2147320773. Severity: No Incident, No Injury. Product: Ultrahuman Smart Ring R1.01.01.01 (Wearable electronic device (smart ring)). Incident: Description of the Issue: The smart ring has developed a visible internal deformation (raised bump on the inner surface) during normal use after approximately one year of ownership. The deformation appears consistent with internal lithium battery swelling, as it is localized and protrudes inward toward the finger. The device has not been subjected to misuse, physical damage, or abnormal charging conditions. Hazard Description: This product is a wearable device intended for continuous skin contact. The observed deformation raises concern for: Potential battery swelling or failure Possible overheating risk during charging Risk of skin contact with a compromised battery enclosure The manufacturer has advised that the device should not be worn in its current condition, indicating a potential safety concern. Manufacturer Response: I contacted the manufacturer, Ultrahuman, for support. They: Acknowledged the device is damaged Advised me not to wear or use the ring Stated that no replacement, repair, or remedy would be provided Recommended that I dispose of the device The manufacturer cited warranty expiration and regulatory constraints as the reason for not offering a remedy, despite the potential safety issue. Injury or Damage: No injury has occurred. The device was discontinued from use after the defect was identified. Additional Notes: This issue occurred under normal usage conditions for a wearable consumer device. Given that the product is designed for continuous wear, a failure mode involving possible battery deformation presents a safety concern, particularly when no remed