The Sofirn SP36s is a powerful 3x18650 flashlight which can output up to 5200 lumens of 5000k high CRI light. It uses 4x Samsung LH351D LEDs to accomplish this. It also supports USB-C fast charging.
Protected button top cells are required for this flashlight.
- Uses four powerful LEDs with a lifespan of 50,000 hours
- Working Voltage: 2.8V-4.2V
- Battery Options: three 18650 Li-ion batteries, not included
- Dimension: 126.7mm (length)× 50mm (head diameter)
- Weight: 300±5 gram (without batteries)
- 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.
- Toughened mineral glass lens with AR coating - scratch and wear resistant
- Reverse polarity protection from improper battery installation
- Advanced Temperature Regulation (ATR) technology: the light will adjust the brightness level automatically to prevent overheating
- Battery Level Indicator: Green light constantly on: Sufficient; Red light constantly on: Low; Red light quick flash: Critical, recharge the light as soon as possible.
The side switch controls all flashlight functions as follows:
Group 1: 6 modes
- Short click to turn on; press and hold for 0.5 second to turn off
- Short click the side switch to cycle through modes:
To change from Group 1 to Group 2: when light is ON, four fast clicks convert group. Two blinks will confirm mode group change.
Group 2: Ramping
- Single click turns off/on.
- Ramping: Press and hold side switch to ramp up or down. Ramping changes direction when press button again within 1.5 seconds; same direction when ramping again after 1.5 seconds.
The light blinks once time when it reaches Eco or High mode.
Double clicks to activate Turbo mode, one click to return last brightness level used.
Triple clicks to activate Strobe mode, long press to cycle through Strobe-Beacon-SOS, one click to return the remembered brightness level.
When the light is OFF, four fast clicks to lock-out, another four fast clicks cancel the lock-out. When the light is locked, the main led only blinks to remind the status.
Battery Level Indication
The switch led shows battery level within 5 seconds after turned on. There are 3 status:
Green light constant on: Sufficient;
Red light constant on: Low;
Red light quick flash: Critical, recharge the batteries as soon as possible.