Cosmo 350 HeadlampFor multi use camping, around the house, and outdoor adventures that require a simple light with both an all purpose beam as well as night vision. This user has the need to run the lamp on alkaline batteries if caught away from a power source for a long backpacking trip. DETAILS Dual Fuel: Power with three AAA Alkaline cells (included) or the rechargeable BD 1500 Li ion battery and charger (purchased separately) for maximum flexibility 350 Lumen max