Do not travel without one of these. The e+ Lite is an emergency back up head torch powered by lithium batteries (included) with a 10 year shelf life. It will operate in a temperature range from +60 to -30 deg. C and is waterproof to 1metre while offering a battery life of up to 45 hours in economy mode. Gives typical beam up to 5 or 6 metres (this is greater initially –up to 15 metres) Operates in 4 modes; standard, economy, flashing white, flashing red and standard red. Comes supplied with elasticated head band and protective pouch with belt loop. Weight 27g