【4-Color-in-1 & 8 Modes】It can emit light in 4 different colours and has 8 lighting modes,by rotating the body, it will cycle in " white - white strobe - red - red strobe - blue - blue strobe - green - green strobe " modes
【Signal Light for Location】By attaching the XTAR SD1 marker light to BCD or diving tanks, it becomes easy for your buddy to locate you when diving in dark or deep sea conditions,it will function up to 100m underwater. And it can also be used for other night outdoor activities, such as camping, caving, group outings at night, team tag, etc
【Powerful marker light&Long Battery Life】 The SD1 is designed to provide high visibility in underwater conditions, ensuring that divers are easily seen by other divers and boats.Powered by the Li-ion battery included,this XTAR SD1 scuba marker light can work continuously 5hrs in constant light mode(white-green 25lm/red-blue 10lm),10hrs in flashing mode
【Compact Design & Memory Function】Size: 0.9inches in diameter, 2.6inches long, net weight is only 27g(excluding battery). The mode used for more than 5s will be memorized, when you turn it on, the SD1 dive beacon will start to cycle from the memorized mode by default.