"Designed for use with PENTAX digital SLR cameras, the O-GPS2 is a versatile GPS unit that not only gives basic location data, but also offers an array of original features that allow for the effortless tracking and photographing of celestial bodies. In addition to GPS in the US, QZSS in Japan, GLONASS and Galileo can be newly received. Simply by mounting the PENTAX O-GPS2 onto the hotshoe of a compatible PENTAX digital SLR camera*, the user can record the latitude, longitude, altitude, universal time coordinated (UTC) and aspect of shooting locations onto captured images. Image files carrying the location data, can be used to track shooting locations and review location data on a PC. The location data stored on such files also makes it much easier to sort and file recorded images. By coupling the location data with the camera's SR (Shake Reduction) system, the unit offers a range of unique, advanced applications, including ASTROTRACER, Simple Navigation and Electronic Compass. * Compatible models are the PENTXA K-3 Mark III, KP, K-3, K-5II, K-5IIs, K-5, K-S2, K-S1, K-70, K-50, K-30, K-r, K-01, 645Z, 645D (as of May 2022). All applications will not support all models. "