Good news:We directly built this 18650 battery inside the flashlight before shipping, in order to get more logistics methods to reach more countries.(Becausethere may be no mailings to transport pure batteries to some countries. So you can try to order in this link. Hope you have a happy shopping.)Specification:BrandModel:Astrolux FT03Body Color:Blue / GreenTactical RingBlackEmitterType:SST40-WLighttemperature:6500K Cool white5700K Neutral white5000K More yellow than Neutral whitePeakBeamIntensity:190,000CDMaxOutput:2400 LumensRange:875MetersFirmware:Tom Es open-source GPL NarsilMv1.3 adapted by Texas_AceBattery:One 26650 cell (or a 21700/18650 cell) 26650 battery included.Driver:Texas Avenger FET Driver with chargingReflector:High quality smooth reflectorLens: Glass with anti-reflective coatingBody:Silicone rubberButton:Aerospace grade aluminium alloyImpactResistant1.5 MetersWaterproof:Equivalent to IPX7, do not immerse in liquidsWeight:Approximately295gwithout cellsSize:170mm* 69.5mm* 34.5 mm(length* head diameter* body diameter)User interface:[1] By default the FT03 is set to usethe very intuitive Narsil smooth RAMPING UI. Instant access to a TURBO mode is also provided.[2] A more conventional discrete level MODE-SET UI is available as an alternative. Any one of 12 pre- defined mode-sets can be selected.[3] MOMENTARY mode is useful for signaling purposes or rapidly/briefly lighting up targets.Note:Forbidden to use a brokenskin or broken battery, which is easy to ca