Headlight Harness places a focused LED of more than 80 published lumens at the chest, adds reflective trim, and uses a replaceable 9-volt battery rather than USB charging. Six sizes cover chest measurements from 13 to 46 inches, and Chewy describes the harness as water resistant. It ranks last because the 3.9 average includes reports of excessive weight for small dogs, wiring or attachment failure, and one serious review describing a smoking battery. Inspect the entire unit before every use and stop using it immediately if the battery, wiring, fabric, or leash attachment shows heat or damage.
