describe: SP40 is Sofirn's first spotlight. It is specially designed for family, EDC or outdoor activities, such as camping, hiking, etc. With a magnet tail cup, it can be adsorbed on many iron objects, which is more convenient during use. It can be powered by a single 18650 lithium-ion battery. Or use repalce battery mainframe powered by 18350 battery. Aerospace-grade 6061-grade aluminum alloy, manufactured by CNC, conforms to military-grade specifications, type III hard anodized wear-resistant surface, to obtain a solid body, collision-resistant geometry and better heat exchange. Specification: SofirnSP40 uses CREE XPL LED with a lifespan of 50,000 hours Working voltage: 2.8V-4.2V Battery option: a 18650 lithium ion battery Size: 108mm (length) * 25mm (head diameter) Weight: 631g (without battery) Tempered mineral glass lens Waterproof grade: accord with IPX7 Reverse polarity protection caused by improper battery installation Mode memory: the last mode in the reminder-it saves the last brightness level used in the normal mode (except Strobe) USB input: 5V1A Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.