Specifications include, but are not limited to: 1 Ea LEICA 855304 GS18 GNSS RECEIVER GS18 T LTE & UHF PERFORMANCE SMARTANTENNA (NAFTA) SHALL INCLUDE: 856073 LOP59, MULTI-FREQUENCY OPTION, ENABLES L2,L5 AND L-BAND TRACKING 856080 LOP64, 20 Hz UPDATE RATE OPTION: 856082 LOP67,DGPS/RTCM INPUT/OUTPUT 856084 LOP69,UNLIMITED RTK AND NETWORK RTK 856086 LOP71,RTK REFERENCE STATION DOES NOT INCLUDE GLONASS OPTION $ $ 1 Ea LEICA 856074 LOP60, GLONASS OPTION, ENABLES GLONASS TRACKING ON A GS18 RECIEVER $ $ 1 Ea LEICA 856075 LOP61, GALILEO OPTION, ENABLES GALILEO TRACKING ON A GS18 RECEIVER. $ $ 1 Ea LEICA 856076 LOP62, BEIDOU OPTION, ENABLES BEIDOU TRACKING ON A GS18 RECEIVER. $ $ 1 Ea LEICA 799190 GEB331, LI-ION BATTERY, 12.2V/2.8Ah, RECHARGEABLE FOR CS20 $ $ 1 Ea LEICA 855306 GVP734,GNSS ROVER CONTAINER FOR A GS18T OR GS16