... inverted,flashlight Irradiation of long - range, long duration night light tail cap Y1 flashlight onlyProduct description : 1.LED use the ... dual protection: temperature protection + protection to lithium), 3-speed light-design, with anti-reverse, prevent over-discharge function: 3-speed ... Two 18650 2400 mA batteries, bright light for at least 2 hours, 6 hours of medium light, low light for 20 hours; 4, ...