Remark:1. Memory function stores the general mode last used (Low or Medium or High).2. While OFF, 4 quick clicks will lock-out the flashlight (4 flickers show successful lock-out). While locked-out, 4 quick clicks again will unlock.3. Low battery indicator: Voltage ＜3.2V, the brightness level downshifts to Moonlight. Voltage = 2.9V, turn off. (Ratio Error: ± 0.1V,while using different battery)4. Battery charging indicator: Solid red light = battery charging, Solid green light = battery full charged.
***Kindly note: This item has included 1x Manker high drain 18350 battery with Type-C USB charging port.***
***Kindly note: If you select 'yes' under item option ' with 18650 tube', you can also use 18650 battery in your hand. We highly recommend you to buy high quality high discharge 18650 battery***