Sig Sauer Soec42200 Echo Thermal Monocular 2-16X35Mm 640X512 12 Microns 50

The Sig Sauer Echo thermal monocular is a compact, hand-held thermal imaging device built for hunters, law enforcement, and outdoor professionals who need to locate game or conduct surveillance in complete darkness. This 2-16x digital zoom thermal monocular gives you a serious advantage in low-light and no-light scenarios—whether you're glassing for coyotes at night, tracking wounded game, or conducting property checks after dark. The 640x512 thermal core with 12-micron resolution and 50Hz refresh rate delivers the clarity you need to identify targets at distance, and a thermal sensitivity of less than 20 millikelvin means it picks up subtle heat signatures others might miss.

Runtime is a major selling point here. The Echo MV35 delivers up to 10 hours of continuous operation, thanks to a dual-power design: an internal reserve cell backs up the removable 18500 lithium-ion battery. The package includes two fully charged 18500 batteries, so you can swap them out in the field without breaking your hunt. Eight color palettes let you dial in the display mode that works best for your environment and personal preference—white-hot, black-hot, or anything in between.

Modern connectivity sets this monocular apart. Pair it with the Sig Sauer BDX 2.0 mobile app to capture and record photos, video, and audio, then view or share your footage in real-time directly to your smartphone. That makes it useful for documenting hunts, assessing game, or coordinating with team members remotely. Everything ships in an EVA zippered case, with a USB-C cable and lens cloth included. Sig Sauer backs the unit with their Infinite Guarantee, so you buy with confidence.

If thermal imaging is new to you, the Echo MV35 strikes a balance: it's more affordable than premium military-grade units but loaded with features that serious hunters and professionals actually use. It's rugged enough for backcountry trips and intuitive enough that you won't spend hours learning the menu system.

Key Features

• 2-16x digital zoom for flexible target acquisition at varying distances
• 640x512 LWIR thermal core with 12-micron resolution for sharp image clarity
• Less than 20 millikelvin thermal sensitivity to detect fine heat differences
• 50Hz refresh rate for smooth, real-time thermal video
• Up to 10-hour runtime with dual-power system: internal reserve cell plus removable 18500 lithium-ion battery
• Eight selectable color palettes for optimal viewing in any environment
• Photo, video, and audio recording with BDX 2.0 app connectivity
• Real-time image sharing and viewing via smartphone
• Compact, handheld form factor for hunting and field work
• Backed by Sig Sauer's Infinite Guarantee

Specifications

Frequently Asked Questions

Can I use the Sig Sauer Echo thermal monocular with my smartphone?

Yes. The Echo MV35 is compatible with the Sig Sauer BDX 2.0 mobile app, which allows you to view, capture, and share thermal images and video in real-time to your phone. You can also record audio alongside your footage.

How long will the batteries last in the field?

The Echo MV35 delivers up to 10 hours of continuous runtime on a single charge, which is among the longest in its class. The monocular also has an internal reserve cell, and the package includes two 18500 rechargeable lithium-ion batteries so you can swap power sources without downtime.

What's included in the box?

Each Echo MV35 ships with the thermal monocular, two fully charged 18500 rechargeable lithium-ion batteries, an EVA zippered carrying case, a USB-C to USB-C data cable, a lens cloth, and quick reference instructions.

What does thermal sensitivity of less than 20 millikelvin mean?

Thermal sensitivity (measured in millikelvin) indicates how fine a temperature difference the monocular can detect. A sensitivity of less than 20 mK means the Echo MV35 can distinguish between very subtle heat variations, allowing you to identify warm targets even in complex thermal backgrounds—critical for detecting game or people in the field.