Features: Generation: 1 Magnification: 1x Lens Diameter: 24mm Field Of View: 54 Resolution: 36 Lp/mm Minimum Focusing Distance: .3m Eye Relief:12mm Diopter Adjustment: 5dptr Maximum Viewing Range: 164yds Power Supply: (2) AA Batteries (3v) **not Included** Estimated Battery Life (without IR): 72hrs Estimated Battery Life (with IR): 20hrs Operating Temperature(???®_f): -4 To +104 Monocular Weight (without Batteries) : 8.3 Oz Headmount Weight: 9.4 Oz Hands Free Operation When Used With Headmount (included) Easy To Use One Hand Adjustments High Quality Image And Resolution Close Observational Range Of Focus High Power Built-in Infared Illumination Ergonomic Design And Quick Power Up 1/4 Inches Socket For Tripod Or Weapons Mount Lightweight And Durable Composite Body Equipped With An Automatic Shut Off Feature That Turns Off The Unit When Exposed To A Bright Light Source Sightmark Limited Lifetime Warranty Covering Defects In Manufacturing Carries CE Symbol On Packaging And Actual Device Includes Protective Carrying Case Lens Cleaning Cloth And Users Manual With Warranty Card