A real light fer you Doc

http://goinggear.com/olight-s1r-baton-900-lumen-1-x-rcr123-cree-xm-l2-led-rechargeable-flashlight-pre-order.html?utm_source=Olight+S1R+20160826&utm_campaign=Olight+S1R+20160826&utm_medium=email

Five output modes: 900 Lumesn ~ .5 Minutes, 300 Lumens ~ 60 Minutes, 60 Lumens ~ 4.5 Hours, 12 Lumens ~ 33 Hours, .5 Lumens ~ 15 Days