The Camels are adding "QUALITY 170mah Dog Collar Replacement Battery Fits Sportdog FR200 , Field Trainer SD-400 , Wetland Hunter SD-400 SD-800 Camo Receivers / MH120AAAL4GC / DC-17 / SDT00-11907 B003Z4ZZAS" to your Amazon cart. You will have the option to confirm this on the next page.