All correspondence must be made through the Vendor Portal. Specifications include, but are not limited to: Required Item GPS Renewal Device #s: 015181001574129 015181001653527 015181001639609 015181001652933 Tracking Service: MicroTracker Service 72651 - Global Positioning Systems, Satellite, Global Information Systems, Including GPS Receivers and Transmitters 4.00 Each 2 Required Item GPS Renewal Device #s: 357812098241042 357812098238774 357812098244566 357812098237461 352753091226603 357812098238626 357812098237412 357812098239806 357812098235333 357812098239418 Tracking Service: Stealth 72651 - Global Positioning Systems, Satellite, Global Information Systems, Including GPS Receivers and Transmitters 10.00 Each