Product Description The Sig Sauer Electro-Optics Echo RQ35 is a purpose-built thermal riflescope engineered for hunters, tactical operators, and shooting enthusiasts who demand reliable thermal detection in any lighting condition. Featuring a 35mm objective lens and a powerful 3.5-28x variable magnification range, the Echo RQ35 combines a high-sensitivity LWIR 12um 50Hz thermal core with a 384x288 resolution sensor to deliver crisp heat contrast and confident target identification at close-to-mid range distances. The compact, balanced form factor is designed around the natural handling of a centerfire rifle, reducing fatigue during extended field use. Built from rugged 7075 aluminum and rated IP67 for waterproofing, the Echo RQ35 is ready for demanding field conditions. BDX 2.0 connectivity allows shooters to record, stream, and configure settings through the BDX mobile app, while an internal battery combined with an optional 18500 external battery provides up to 12 hours of continuous runtime. Product Highlights LWIR 12um 50Hz Thermal Core: Less than 20mK sensitivity for precise heat signature detection in complete darkness or adverse weather conditions. 384x288 Thermal Resolution: Delivers clear heat contrast for confident target identification and situational awareness at practical engagement distances. BDX 2.0 Enabled: Record video, stream live footage, and remotely configure scope settings via the Sig Sauer BDX mobile app. 12-Hour Runtime: Internal battery supplemented by a replaceable 18500 external battery for extended field sessions without interruption. IP67 Waterproof and 7075 Aluminum Construction: Rugged housing engineered to withstand recoil, rain, and demanding tactical environments. Specs Brand: Sig Sauer Electro-Optics Model: Echo RQ35 Manufacturer Part Number (MPN): SOEC31200 UPC: 798681704132 Magnification: 3.5-28x Objective Lens Diameter: 35mm Thermal Resolution: 384 x 288 Thermal Core: LWIR 12um 50Hz Sensitivity: Less than 20mK Maintube Diameter: 30mm Field of View: 7.6 degrees Frame Rate: 50Hz Color Palettes: 8 Video Recording: Yes BDX Enabled: Yes (BDX 2.0) Battery: Internal + (1) 18500 external Run Time: 12 Hours Overall Length: 14.8 in (375mm) Overall Width: 2.8 in (72mm) Height: 3.5 in (89mm) Weight: 31.7 oz (900g) Material: 7075 Aluminum Color: Black Waterproofing: IP67 Mount Compatibility: 1913 Picatinny Rail Disclaimer: We strive to provide accurate and up-to-date product descriptions, specifications, and images; however, errors or omissions may occasionally occur. We are not responsible for any inaccuracies or discrepancies in the content provided. If you notice anything incorrect or unclear, please contact us so we can correct it. When in doubt, we recommend verifying details directly with the product&';s manufacturer. ]]>