DNT Optics Hound Handheld Thermal Monocular w/ LRF and Ballistics Tan/Black. Its ballistic calculator instantly generates pinpoint aiming solutions by combining real-time laser data with your custom ballistic profile turning every shot into a more precise hit. Specifications for DNT Optics H635R Hound Handheld Thermal Monocular: Manufacturer: DNT Optics Magnification: 2 - 8 x Color: Tan/Black Objective Lens Diameter: 35 mm Width: 2 in Length: 6.1 in Height: 2.8 in Battery Life: 5 hours Eye Relief: 25 mm Weight: 10 oz Water Resistance Level: IP67 Refresh Rate: 50 Hz Additional Features: LRF/Ballistics Features of DNT Optics H635R Hound Handheld Thermal Monocular Thermal Imagining Laser Rangefinder Ballistic Calculator Audio and Video Recording Package Contents: DNT Optics H635R Hound Handheld Thermal Monocular 2x 18650 Batteries 1x Charger 1x Data Cable 1x User Manual 1x Cleaning Cloth 1x Quick Start Guide DNT Optics H635R: H635R Hound Handheld Thermal Monocular w/ LRF and Ballistics Tan/Black