The Liemke Keiler-13 Pro is a perfect entry-level model for a compact thermal monocular. The Keiler-13 Pro features a durable design with an IP66 certification for complete protection against dust and water damage. The Keiler-13 Pro utilizes a wobble – free, 50Hz image frequency and can display sources of heat in 4 different viewing settings: black hot, white hot, red hot and rainbow mode. In addition, the Keiler-13 has a digital magnification range of 2x and an optical magnification range of 1.2x.