Price: 26.83

Sofirn C8G(21700) flashlight is a powerful flashlight, with single SST40 HI LED, Advanced Temperature Regulation(ATR) technology,  It features two mode groups:group 1 with 5 modes; group 2 with ramping, hidden ECO, Turbo, Strobe, Beacon and SOS.


※ SST40(6000k-6500k)

※ Working Voltage: 2.8V-4.2V

※ Battery Options: One 21700 Li-ion battery or One 18650 Li-ion battery

※ Dimension: 150mm (length)× 44.6mm (head diameter)

※ Weight: 163±2 gram (without batteries)

※ Flashlight body: Aerospace grade 6061 grade aluminum alloy, CNC manufactured to hard-anodized anti-abrasive finish to get solid built body, anti-crash geometry and better heat exchange.

※ Toughened mineral glass lens with AR coated

※ The waterproof level: in accordance with IPX8 (submersion 2 meters underwater for 30 minutes)

※ Reverse polarity protection from improper battery installation

※ Advanced Temperature Regulation (ATR) technology: ATR will adjust the brightness level automatically when the driver temperature reaches 50℃ (122 °F) to prevent overheating

※ Power Indicator:

The LED indicator shows power status for 5 seconds when turns on.

Green if power is good enough, Red if short of power, Flashing Red if running out of power.

The flashlight turns off automatically if the voltage is lower than 2.7 volt, please recharge battery or insert a new battery.

Operation Instruction:

The tail switch is the tactical switch, and the side switch is the functional switch.


Tap the tactical switch to momentarily turn on the light; release it and the light will go out. Fully press the tactical switch to constantly turn on the light; press once again to turn off the light.

Output Selection

group 1: With the light switched on, single click the functional switch to cycle through Low→Med→High..A fast double click actives turbo mode,as soon as the Temperature on the driver reaches on 50 Celsius,there is a stepdown to high mode.

group 2: With the light switched on, press and hold the switch switch to ramp up and down. The range is 10LM – 2000LM, it blinks when reaching max or min brightness. Ramping changes direction when press button again within 1.5 seconds, same direction when ramping again after 1.5 seconds.A fast doubleclick directly ramps to turbo mode,as soon as the Temperature on the driver reaches on 50 Celsius,there is a stepdown to high mode.

With the light switched on, 3 fast clicks to activate Strobe mode, press and hold to cycle through Strobe-Beacon-SOS, single click goes back to normal brightness.

With the light switched on, 4 fast clicks change group 1 to group 2.

With the light switched off, press and hold side switch and click tail switch to activate Eco mode.

Mode memory:brightness levels will be maintained,it turns on with the remembered mode


1:without battery: including 1 flashlight, 1 lanyard, 1 user manual,  2 replace orings

2: with battery kit: including 1 flashlight, 1lanyard, 1 21700 battery, 1 USB charger, 1 user manual, 2 replace orings