Amazon.com : Celestron - SkySync Telescope GPS Accessory, Black (93969) & SkyPortal WiFi Module - Control Your Celestron Computerized Telescope via Smartphone & 18778 AC Adapter (Black) : Electronics
Celestron Motor for SCT and EdgeHD - Enables Electronic Focusing & SkySync Telescope GPS Accessory – Automatically Updates Your Telescope with 16-Channel GPS Data, Time, and Date, Black (93969)