SIG SAUER Echo RV50-LRF 2.5-25x50mm 30mm Tube Thermal Rifle Scope 50 Hz 640x512 Black. 5-20X50MM LRF BDX 2.0 Specifications for SIG SAUER Echo RV50-LRF 2.5-25x50mm 30mm Tube Thermal Rifle Scope: Manufacturer: SIG SAUER Color: Multi Magnification: 2.5 - 20 x Objective Lens Diameter: 50 mm Tube Diameter: 30 mm Refresh Rate: 50 Hz Resolution: 640x512 pixels Brightness Settings: 8 Field of View Angle: 8.8 degrees Battery Type: 18650 Battery Life: 12 hours Water Resistance Level: IPX67 Length: 15 in 380 mm Width: 2.8 in 72 mm Height: 3.5 in 89 mm Weight: 990 g 34.9 oz Battery Quantity: 2 Noise Equivalent Temperature Difference: 20 mK NETD Features of SIG SAUER Echo RV50-LRF 2.5-25x50mm 30mm Tube Thermal Rifle Scope: LWIR 12um 50Hz thermal core with ?20mK sensitivity Record still photos and video with audio BDX 2.0 enabled 12-hour runtime SIG SAUER Infinite Guarantee unlimited lifetime warranty Package Contents: SIG SAUER Echo RV50-LRF 2.5-25x50mm 30mm Tube Thermal Rifle Scope (2) 18500 batteries Battery charger USB-C cable Flip back lens cover Removable Eyepiece 1.535" 30mm ALPHA6 rings Lens cloth Thermal target Integrated 1000y laser rangefinder Applied Ballistics Ultralight SIG SAUER Infinite Guarantee SIG SAUER ECHO Riflescopes SSSOEC32310