DLG2x2 Deros Level Grouse Target or Bullseye Sensitivity: .2 degrees left x .2 degrees right. Total of .4 degrees between green and red led's (.4 tenths of 1 deg.) 
Product Details...

DLG3x3 Deros Level Grouse Tactical Sensitivity: .3 degrees left x .3 degrees right. Total of .6 degrees between green and red led's (.6 tenths of 1 deg.) 
Product Details...

DLG4x4 Deros Level Grouse Varminter Sensitivity: .4 degrees left x .4 degrees right. Total of .8 degrees between green and red led's (.8 tenths of 1 deg.) 
Product Details...

DLG5x5 Deros Level Grouse Hunter Sensitivity: .5 degrees left x .5 degrees right. Total of 1 degree between green and red led's (1 degree) 
Product Details...