Model Number:SP31-V2.0 Function:Hard Light Charger:Not Applicable Focal Length:Non-adjustable Light Source:LED Bulbs Wattage:12 Body Material:Aluminum Alloy Certification:FCC Color:Black Switch Mode:High/Middle/Low Zoom:No Model of LED Beads:XPL-HI Flashlight Type:camping,hiking,cycling,outdoor using Waterproof:Yes Lumen:1200 Support Dimmer:5-8 files Lighting Distance:200-500 m Origin:Mainland China Item Type:Flashlights Sofirn SP31 V2.0 flashlight is an upgraded version of the Sofirn SP31, with Advanced Temperature Regulation (ATR) technology, battery power indicator and improved user interface.It can be operated from a single 18650 Li-ion rechargeable battery or two CR123A batteries. It features 7 modes:Eco-- Low --Medium--High--Turbo, hidden strobe and SOS, by one side switch and one tactical tail switch. Specifications: Cree XPL-HI V3 LED Voltage: 2.8-6.6 volts Battery Supported: single 18650 or 2*CR123A li-ion batteries Dimension: 133.5mm(length)* 23.4mm(head) Net Weight: 72±1 gram (no batteries included) Made by Aircraft 6061 grade-aluminum alloy, Premium type Ⅲ hard-anodized anti-abrasive finish to get solid built body, anti-crash. Toughened glass lens with purple AR coating; Smooth Reflector Mode Memory: It memorizes the last brightness level used in the general modes, but it does not remember the Strobe mode. It will activate the last brightness you selected, when you turn on the flashlight next time. Reverse polarity protection: to protect from improper battery installation Constant current output is adopted Advanced temperature regulation (ATR) technology： It adjusts the brightness level automatically when the driver temperature reaches 60℃ to keep the light from overheat. Automatic Stepdown: Turbo steps down to High after working for 3 minutes to avoid overheat. The ART works if the drivers reaches 60℃. Low voltage warning: It is lower than 3.1 volts if the LED Red indicator (on the side switch) flashes rapidly when you turn on. Then please recharge the battery. Low Voltage Protection: If the voltage is lower than 3.0 volt when turn on, automatic stepdown works. so it keeps stepping down to the lowest mode and runs out power juice. Please insert new battery if you get this signal. Battery Capacity Indicator (LED on the side switch) The indicator is on for 5 seconds every time when light turns on. It shows green or red to indicate the battery power. Steady Green: enough power Steady Red: short of power Flashing Red: running out of power. Please insert a new battery! Operation Instruction: The tactical tail switch turns on or off The side switch to choose modes 1.one click to adjust one mode. It cycles from Eco-- Low --Medium--High --Turbo --Eco; 2.Press 1.2 seconds to active Strobe, and one click again to active SOS; it cycles SOS-- Strobe-- SOS; press 1.2 seconds again to returns to common modes 3.Memory function: It work for Eco/ Low / Medium / High/ Turbo (Strobe or SOS cannot be memorized) Package including: 1.without battery:  flashlight, replace-Orings, lanyard, user manual 2. with battery: flashlight, replace-orings, 3000mah 18650 battery, USB charger, lanyard, user manual