The Jet-I PRO EX3 v3.0 is constructed from T6070 T6 aircraft aluminium and runs off a two AA battery. Fitted with a R2 CREE LED this flashlight can emit 220 Lumens for 60 minutes on max, 190 Lumens for 75 Minutes on High and 20 Lumens for an amazing 10 hours on Low. To protect the led from any unwanted problems the Jet-I Pro EX3 has been fitted with a high efficiency LED drive circuit with a reverse polarity protection function. The Jet-I Pro EX3 is also waterproof to IPX-8 standard.