Sofirn C8L is a powerful, versatile flashlight designed for home, EDC or outdoor activities like camping, hiking, fishing or hunting. It's operated using two switches, a tactical tail switch and a side switch. It uses one 21700 battery and features a USB-C port for convenient charging.Super bright CREE XHP50D-HILED gives output up to 3100lumens.

Specifications:
1. High-Powered: The C8L used Cree XHP50D HI LED bulb, outputting up to 3100 lumens. Its smooth and evenly beam effortlessly illuminates an entire room or backyard, and compact size fits into backpacks, glove compartments, travel bags, and more.

2. Rechargeable: With Type-C charging port, feel free to connnect with one adapter directly when the indicator flashes in red. And it takes around 3 hours for one 4000mah 21700 battery as it is 2.5A currency in charging.

3. Smart design: C8L adopt intelligent ATR technology which will adjust the brightness level automatically when the driver temperature reaches 50℃ (122 °F) to prevent overheating.

4. Multi-functional: Good Balance between 5 normal brightness and 2 tactical modes & 3 flashes modes. The pocket LED lights cycle through modes at the press of the side button; while strobes and tactical are hidden clamly.

5. Pocket Size: These flash lights are big on power, but still compact enough to fit in your backpack, survival bag, or glove compartment. Ideal for outdoor adventures and preparedness. 

6. DURABLE: This ultra bright torch is virtually indestructible. Made from military-grade aluminum, it's also water-resistant IPX8 and strong enough to survive a 1 meter drop. 

7. Nice Beam: Beam can be super wide (82°) and super narrow (26°）Pretty good in outdoor activities and emergency use.

8. Mode Memory: memorizes the last brightness level used in the general modes (Eco/Low/Med/High).

9. Power IndicatorThe LED indicator in the side switch shows the power status for 5 seconds after turning C8L on.
Green = remaining battery power is good.
Red = remaining battery power is poor (less than 30%).
Flashing Red = critical power, replace or recharge battery as soon as possible.

Opeartion:

1, On or OFF: press the tail switch to turn on or off. And activiate the memory function
2, Normal Modes: click the side switch to cycle through Low- Med- High; double clicks to Turbo; three clicks to enter flashes modes
3, In Flashes modes: every double-clicks to get different flashes modes such as strobe- sos- beacon
4, Eco: From Off, hold and press the side switch and then click the tail switch to activate the Eco
5, press and hold the side switch to adjust the normal modes and tactical modes (the "over" sign is the light flashes two times)
6, From Off: doulbe clicks to turbo quickly

Tactical Modes:
In tactical modes: the default mode is Turbo
From ON: change modes via the side switch and doulbe clicks to Strobe
From OFF: doulbe clicks of the tail switch to Strobe

Notice: Please do not use it as diving flashlights. It can be damaged when the water gets into via the charging port.