![Amazon.com : PENTAX O-GPS2 Handy GPS Unit with ASTROTRACER, Simple Navigation, Electronic Compass. Simplified Weather-Resistant Construction (30364) : Electronics Amazon.com : PENTAX O-GPS2 Handy GPS Unit with ASTROTRACER, Simple Navigation, Electronic Compass. Simplified Weather-Resistant Construction (30364) : Electronics](https://m.media-amazon.com/images/I/81Oc7Hkl7fL.jpg)
Amazon.com : PENTAX O-GPS2 Handy GPS Unit with ASTROTRACER, Simple Navigation, Electronic Compass. Simplified Weather-Resistant Construction (30364) : Electronics
![The Astrotracer (O-GPS1) works well with a 300mm lens :): Pentax SLR Talk Forum: Digital Photography Review The Astrotracer (O-GPS1) works well with a 300mm lens :): Pentax SLR Talk Forum: Digital Photography Review](https://3.img-dpreview.com/files/g/TS560x560~3054416.jpg)
The Astrotracer (O-GPS1) works well with a 300mm lens :): Pentax SLR Talk Forum: Digital Photography Review
![Amazon.com : PENTAX O-GPS2 Handy GPS Unit with ASTROTRACER, Simple Navigation, Electronic Compass. Simplified Weather-Resistant Construction (30364) : Electronics Amazon.com : PENTAX O-GPS2 Handy GPS Unit with ASTROTRACER, Simple Navigation, Electronic Compass. Simplified Weather-Resistant Construction (30364) : Electronics](https://m.media-amazon.com/images/I/71P7WHdnCQL.jpg)
Amazon.com : PENTAX O-GPS2 Handy GPS Unit with ASTROTRACER, Simple Navigation, Electronic Compass. Simplified Weather-Resistant Construction (30364) : Electronics
![Amazon.com : PENTAX O-GPS2 Handy GPS Unit with ASTROTRACER, Simple Navigation, Electronic Compass. Simplified Weather-Resistant Construction (30364) : Electronics Amazon.com : PENTAX O-GPS2 Handy GPS Unit with ASTROTRACER, Simple Navigation, Electronic Compass. Simplified Weather-Resistant Construction (30364) : Electronics](https://m.media-amazon.com/images/I/71dosS4Zb4L._AC_UF894,1000_QL80_.jpg)