Hello, I m looking for a mono fonction RED LIGHT, -from 3 to 8 LED -with battery AAA or lithium, or USB -powerfull to see at 2 meters in the dark, like bicycle security redlight -with only one mode ON OFF and NO multifonction flash mode - as simple as possible - maximum price 2.5 dollars piece Thank you very much! Have a nice day Maxime TREMBLAY