| CPC F21L 4/085 (2013.01) [F21V 5/006 (2013.01); F21V 14/065 (2013.01); F21V 21/084 (2013.01); F21V 23/008 (2013.01); F21V 23/023 (2013.01); F21V 23/0414 (2013.01); H05B 45/10 (2020.01); F21Y 2101/00 (2013.01); F21Y 2115/10 (2016.08)] | 22 Claims |

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1. A headlamp assembly, comprising:
a first housing configured to be worn on a front surface of a head of an operator, the first housing comprising a light-emitting element and a secondary power source, the secondary power source being rechargeable;
a second housing separate from the first housing that is configured to be worn on a rear surface of the head of the operator, the second housing comprising a primary power source and a selector, the second housing being electrically coupled to the first housing, wherein the primary power source is disposable and not rechargeable; and
circuitry configured to toggle power provided to the light-emitting element between the primary power source and the secondary power source based at least in part on an orientation of the selector.
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