Bering Optics Ocelot Gen 2+ Tactical 1.0x NV Monocular is ruggedly designed and comes with many useful features and it rivals well its pricier competition. The monocular is extremely versatile. It may be assembled with Gen 2, or Gen 3 tube, and can be operated as a handheld device as well as be head, helmet, and weapon mounted. Furthermore, Ocelot may be assembled with 3.0x, 4.0x, 5.0x, 6.6x, 8.0x.9.6x magnifier lenses (sold separately) to further extend the viewing capability. The unit is operated by a single standard AA, or CR-123 battery.