Erro Black Color Police 10 LED Flashlight - 3D size cells for 100 hours battery life 10 bright LED flashlight using 3 D size batteries. It will power the flashlight up to 100 hours Gentle wide beam good for reading Heavy and strong enough to be a baton for self protection Weight and size similar to a 3 D Cells police flashlight. Was selling for as much as $69.95 when it comes out in 2006. You can have it for under $10 now.