Garmin Epix. Garmin's Epix is the first of its kind, a high resolution, color, touchscreen GPSGLONASS mapping watch with worldwide, shaded relief basemap and 1 year BirdsEye Satellite Imagery subscription. USA TOPO model also features preloaded TOPO 100K maps. Eight GB of built in memory supports additional mapping, including BirdsEye Satellite Imagery and regional TOPO U.S. 24K maps. The revolutionary, stainless steel EXO antenna combined with GPS and GLONASS reception mean better signal strength and quicker position fixes.