SpecificationsEmitter: High performance LED, e.g.Luminus SST20Flux: ~570 lm/ 750 lm (10180/ 10440)Throw: ~135 m & ~4455cd/ 150 m & 5670cdRuntime: 9 hours/ 36 hours (10180/10440, Moonlight)Power: 12.6WFirmware: Tom E’s open-source GPL NarsilM v1.3 adapted by Texas_AceUser interface:  By default the Frog is set to use the very intuitive Narsil smooth RAMPING UI. Instant access to a 2.5A TURBO mode is also provided.  A more conventional discrete level MODE-SET UI is available as an alternative. Any one of 12 pre-defined mode-sets can be selected. MOMENTARY mode is useful for signaling purposes or rapidly/briefly lighting up targets.Battery: One button-top 10180 Li-ion (included) or 10440 Li-ion (excluded) via the long tubeDriver: Texas Avenger FET driverOptic: TIR optice lensLens: Glass with anti-reflective coating Body: Aluminum with Type III hard-coat anodizingButton: Tactile with back-lit rubber bootIngress rating: Equivalent to IPX-8, underwater 2mWeight: Approximately 11g without cellsDimensions: 15.6 mm Ø head x 45mm lengthPackage includes: 1XFrog, 1X 10180 Li-ion battery, 1XKeychain, 1XManuall, 1XCharger, 1X CableCharging the battery: Remove the insulation sheet before the first use. The indicator shows red when the battery is connected. The charging indicator shows red when charging, and turns green when fully charged.Notice: Extra 10180 battery will load into a extra mini flashlight. Don't let it be fooled you.