... low price made in USA famous brand in the world Apresys Seth general power series is a laser ranging telescope, plus ... telescope portable optical laser ranging instrument!mode:PRO550 Operating Temperature:-20~ 50 ºCFunction: rangefinder + binoculars Distance Time: 0 ... *72*41mmRanging Accuracy:±1 M Exit pupil: 3.9mField: 7° APRESYS PRO550