For 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. Features 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 output Red LED night vision has dimming and strobe modes and is quickly activated with dual-button interface Settings include dimming, strobe, red night-vision and lock mode Multifaceted optical lens design IPX8: Waterproof-Tested to operate at least 1.1 meters underwater for 30 minutes. If submerged, water may enter the battery compartment and it will still operate; it should be completely dried out after use in wet conditions Integrated battery meter display shows % of power remaining Digital lock mode feature safeguards against accidental use when stored in a pack or pocket TECH SPECS Weight 46g (no batteries) 79g (Alkaline 3xAAA) 73.5g (BD1500 Battery) Max lumens 350 Max distance(s) on highest setting 64m Max distance(s) on lowest setting 10m Max burntime(s) on highest setting FL1 3 H; reserve 30 H (Alkaline) FL1 5 H; reserve 2 H (BD1500 Battery) Max burntime(s) on lowest setting FL1 200 H; reserve 0 H (Alkaline) FL1 225 H; reserve 0 H (BD1500 Battery)