Specification: Brand Lumintop Model GT MINI PROEmitter XHP50.2 3VLED, cool white Flux 3500 lm Intensity 57, 000cd (ANSI throw 480m) Firmware Tom Es open-source Narsil M v 1.2 Driver 29.5W, 9 A FET driver. Parasitic drain while OFF is ~27 AReflector 43mm ID, aluminum, smooth finish Lens Glass with anti-reflective coating Body Aluminum with Type III hard-coat anodizing Button Tactile with back-lit rubber boot Ingress rating IP68, underwater 2 meters Dimensions 50 mmhead x 132 mm length Weight 150g without cells User interface:[1] By default the GTmini is set to use the very intuitive Narsil smooth RAMPING UI. Instant access to a TURBO mode is also provided.GT MINI uses free software distributed under the terms of the GNU Public License version 3GT MINI Anduril code from toykeeper/flashlight-firmware[2] A more conventional discrete level MODE-SET UI is available as an alternative. Any one of 12 pre- definedmode-sets can be selected.[3] MOMENTARY mode is useful for signaling purposes or rapidly/briefly lighting up targets. Battery: One button-top 18650 or 18350 (short tube included) Li-ion cells Protected cells are recommended. Cells are not included. Package included:1 x EDC flashlight