Hikmicro Lynx LH19 3.0 Thermal Monocular | 19mm Lens | Short RangeThe LH19 3. 0 is the first in the new Lynx 3. 0 lineup to introduce a Focus Ring. While the "Focus Free" systems of the 15mm models are great for convenience, the manual focus ring on the LH19 gives you the control needed to get the absolute sharpest image possible at specific distances. This is critical when identifying targets at the extended 900m detection range. The combination of the <15 mK NETD sensitivity and the 19201080 display creates an