Small%20enough%20to%20bring%20just%20in%20case%2C%20but%20bright%20enough%20to%20light%20the%20way%20down%20unexpected%20rappels%20and%20dark%20trails%2C%20the%20Astro%20300%20features%20a%20compact%20body%20that%20is%20ergonomic%20with%20a%20low%20profile%20for%20better%20balance.%20In%20addition%2C%20the%20updated%20optical%20efficiency%20provides%20brighter%20light%20at%20300%20lumens.%20New%20for%20the%20Astro%20is%20its%20Dual-Fuel%20compatibility%2C%20allowing%20you%20to%20power%20the%20light%20with%20either%20the%20rechargeable%20BD%201500%20Li-ion%20battery%20or%20three%20standard%20AAA%20batteries.%20The%20Astro’s%20dimming%20and%20strobe%20modes%20let%20you%20customize%20the%20lighting%20to%20your%20needs%2C%20and%20the%20highly%20weather%20resistant%20housing%20withstands%20rain%20and%20sleet%20from%20any%20angle.Product%20FeaturesPatented%20digital%20lockout%20feature%20safeguards%20against%20accidental%20use%20when%20stored%20in%20a%20pack%20or%20pocketDual-Fuel%3A%20Maximum%20flexibility%20to%20utilize%20either%20Alkaline%20cells%20or%20a%20rechargeable%20Lithium%20Ion%20BD%201500%20battery%20(sold%20separately)Emits%20up%20to%20300%20lumens%20on%20max%20settingSettings%20include%20full%20strength%2C%20dimming%20and%20strobe.Brightness%20Memory%20allows%20you%20to%20turn%20the%20light%20on%20and%20off%20at%20a%20chosen%20brightness%20without%20reverting%20back%20to%20full%20power.IPX4%20Stormproof%3A%20withstands%20rain%20and%20sleet%20from%20any%20angle