Specification: color: black.  Waterproof: Yes.  Switch Mode: High/Middle/Low.  Support Dimmer: 2-4 files.  Lumen: 1200.  Lighting Distance: 100-200 m.  Light Source: LED Bulbs.  Item Type: Flashlights.  Function: Self Defense.  Function: Hard Light.  Function: Power indicator.  Flashlight Type: outdoor lighting,camping,EDC.  Charger: Rechargeable.  Body Material: Aluminum Alloy.     Description: Sofirn New SP40A is a powerful headlamp designed for home, EDC or outdoor activities like camping, hiking etc.. It can be operated from a single 18650 Li-ion rechargeable battery. The switch controls following functions: Low-Medium-High, hidden Turbo.  SP40 and SP40A share the same body but with different leds . （SP40 with XPL, SP40A with LH351D).  SP40 with reflector and SP40A with TIR Optics.  Powerful LH351D led 5000k.  Working Voltage: 2.8V - 4.2V.  Battery Options: One 18650 Li-ion battery.  Dimension: 108mm (length) × 25mm (head diameter).  Weight: 63±1 gram (without battery).  Flashlight body: Aerospace grade 6061 grade aluminum alloy, CNC manufactured to Military Grade Specification type III hard-anodized anti-abrasive finish to get solid built body, anti-crash geometry and better heat exchange.  IPX7 Waterproof (submersion up to a maximum depth of 1m underwater for up to 30 minutes).  Reverse polarity protection from improper battery installation.  Mode memory: Brightness levels will be maintained, it turns on with the remembered mode (general modes except Turbo).  Advanced Temperature Regulation (ATR) technology: ATR will adjust the brightness level automatically when the driver temperature reaches 55℃ to prevent overheating.  Power Indicator: The LED indicator on the switch blinks in green for 5 seconds if remaining battery power is over 30%. When the indicator turns to red, battery condition is below 30%. Flashing red light indicates low power - replace or recharge battery as soon as possible.     What you will receive: Option 1.without battery: 1 headlamp; 1 clip;1 USB cable, 2 replace O-rings; 1 18350 battery tube, 1 headband.     Option 2.with battery: 1 headlamp; 1 clip;1 USB cable, 2 replace O-rings; 1 18350 battery tube.  1 headband; 1 3000mah 18650 battery.  ANSI/NEMA FL1 Chart.  Outdoor lightness show