The RIX STRIDE ST3 LITE thermal imaging monocular delivers professional-grade thermal detection with 640x512 resolution and an impressive 1900m range of focus.RIX STRIDE ST3 LITE Thermal Imaging Monocular640x512 thermal resolution for clear imaging1900m maximum range of focusDiopter adjustment range: -5/+218650 rechargeable battery power supply31.5deg field of view with 20mm eye reliefCompact dimensions: 4.5" x 2.8" x 1.9"Lightweight at 0.60 lbsIdeal for hunting surveillance search and rescue operations or outdoor activities requiring reliable thermal detection and observation capabilities in all weather conditions.