sofirn SD05 Tempered Glass Lens 21700 Battery Stepless Dimming Professional Scuba Diving Flashlight
1. CREE XHP50.2 LED with a lifespan of 50,000 hours
2. Working Voltage: 3V-4.5V
3. Battery Options: One 21700 or 18650 Li-ion battery
4. Dimension: 119mm (length)× 37.5mm (head diameter)
5. Weight: 120 gram (without batteries)
6. Premium type Ⅲ hard-anodized anti-abrasive finish
7. Magnetic rotating ring for one-handed operation
8. Reverse polarity protection from improper battery installation
9. Low battery warning: The flashlight is rapid flashing every minute to indicate low battery if the voltage is lower than 3 volt, please insert new battery.
10. Automatic Stepdown: The flashlight will slowly steps down to lower mode after 3 minutes of operation in the high mode to prevent overheating.
11. Low voltage protection: The flashlight turns off automatically if the voltage is lower than 2.6 volt. Please recharge the battery.