The Fenix RC40 is a high output 6000 lumen torch ideal for search and rescue, security or any job that requires a high output light.  The RC40 is the largest rechargeable in the series.  The battery provided is a custom battery and houses six cree XM-L2 U2 LEDs.  When the torch is used it will light up a whole area, even in daylight! The beam reaches out to 730 meters.  The other great feature is that there is a USB output socket in the tailcap of the RC40 so you can charge other devices from the huge battery.  The battery has a capacity of 15600mAh using 3.7 volts.Because this is such a huge light it has a built in over charge, over heating and over discharge protection.  So if your light starts to over heat it will decrease in brightness by 65 degrees Centigrade.  There is also a memory circuit that remembers the last used setting and is also waterproof to 2 meters depth for 30 minutes.The RC40 light settings start at a level of 45 lumens, 500, 2000, 4000 and then a huge 6000 lumens.  This makes the light a great option and very versatile for many jobs.  The RC40 also has a left button control strobe with SOS feature.Fenix RC40 SpecificationsRechargeable Battery which is removableStrobe and SOSOutput and run time - Turbo: 6000 lumens (1h accumulated), High: 4000 lumens (1h 50 min), Mid: 2000 lumens (4h 5 min), Low: 500 lumens (18h 15 min), Eco: 45 lumens (125h), Strobe: 6000 lumens, SOS: 500 lumens 
Anti reflective coated glassToughened Ultra clear GlassTail Stand so can be stood up as a lanternWaterproof - IPX-8 2meter depthAircraft grade Aluminium27.2cm Length 5.2 cm tube dia 10.8 cm head dia1.234 kg with batteryIncluded