This emergency torch really is super small, less than 5cm long & weighing only 27g, but has several light modes accessed via an easy to use switch. The switch can be used with gloved hands & has a lock mode to stop it being accidentally switched on in your pack, & thats just as well as the E-Lite can be stored with its batteries for up to 10 years. The white LED functions are low power, hig power & strobe & the red LED functions are strobe & high power. In emergency situations the red LED can be seen for up to 30 hours 300 metres away. Nasty weather is no match for this cockroach like resilient torch, resisting temperatures from minus 30 to plus 60 degrees celsius, & can be immersed in water up to 1 metre for 30 minutes, so heavy rain is no threat. The retractable ZIP cord offers a multitude of attachment options, from on your head, wrist, bike handlebars, tent pole, trekking pole, dog...well pretty much anything really.