Specification: Brand LUMINTOPEmitter XP-L HI 3D (NW 5000K)XP-L HI 1A (CW 6500K) Nichia 219C 4000KSST20 4000 K Optic Standard TIR optics Lens Glass with anti-reflective coating Flux~2800 lm (XP-L Hi), ~1600 lm (Nichia) Intensity~10 000 cd ANSI throw ~200 m (XP-L Hi) Firmware The HL3A uses free software called Andril, distributed under the terms of the GPL v 3. Code is available from Driver FET+7+1 driver. Low parasitic drain while OFFBody Aluminum with hard-coat anodizing Switch Electronic tail switch Ingress rating Equivalent to IPX7 Size 33.8 mmhead x 81 mm length Weight Approximately 54g without cells User interfaces: [1] By default the HL3A is set to use SMOOTH RAMPING. Instant access to TURBO mode is also provided.[2] A more conventional STEPPED RAMPING UI is available if you like discrete modes level. You can choose how many steps you want.[3] MOMENTARY mode is useful for signaling purposes or rapidly/briefly lighting up targets. To exit this mode, physically disconnect power[4] MUGGLE mode uses a reduced output.[5] It has an electronic LOCKOUT for safety, but acts also as momentary low light. Other functions: Battery check, sunset, beacon tactical strobe, party strobe, bike flasher, candlelight, lightning storm Battery: One flat-top or button-top 18650 cell. An unprotected cell is recommended. Max. length 66 mm. Cell is not included. Package included:1 x Flashlight Headlamp