SIG ECHO SV50-LRF Review: A Revolutionary Thermal Imaging Sight

SIG Sauer has released a groundbreaking addition to the thermal optics world with the SIG ECHO SV50-LRF. This new thermal sight combines high-end technology with ease of use, making it an outstanding choice for hunters, tactical professionals, and anyone needing precise thermal imaging. Packed with advanced features like a 640 sensor, an integrated laser range finder (LRF), and customizable settings, the ECHO SV50-LRF offers impressive performance at long ranges, all backed by SIG’s industry-leading lifetime warranty.

In this detailed review, we’ll explore everything you need to know about the SIG ECHO SV50-LRF, from its specs to its real-world applications.

A Closer Look at the ECHO SV50-LRF’s Specifications

The SIG ECHO SV50-LRF is built around a 640 thermal sensor with a 50mm objective lens. The sensor has a sensitivity of less than 20mK, ensuring superb clarity and sensitivity even in low-contrast conditions. Additionally, the thermal imaging device boasts a 12-micron pixel pitch, making it one of the most precise thermal scopes in its class.

Another highlight of the ECHO SV50-LRF is its laser range finder. Unlike many generic thermals, SIG incorporated its proprietary SIG laser algorithm into this sight, resulting in one of the most accurate laser range finders available in a thermal optic. The range finder has a stated maximum range of 1,000 yards but can often read accurately up to 1,200 yards depending on atmospheric conditions.

Features that Set the ECHO SV50-LRF Apart

Built-in Laser Range Finder

The integrated laser range finder (LRF) is one of the standout features of the ECHO SV50-LRF. Most thermal scopes on the market lack a built-in LRF, requiring users to rely on external range-finding equipment. SIG’s advanced LRF system is seamlessly integrated into the optic and connects with the SIG BDX app to deliver Applied Ballistics Lite solutions.

Through the BDX app, users can input ballistics data, including caliber, velocity, ballistic coefficient, and other specifics. The LRF communicates with the app and delivers real-time holdover and drop adjustments directly within the scope’s reticle for distances up to 800 meters.

Battery Life and Charging Options

Powering the ECHO SV50-LRF are two 18650 rechargeable batteries. These batteries offer approximately 6 hours of continuous use, though actual battery life may vary based on usage settings. For uninterrupted field use, the device comes with four batteries and a dual-port USB-C charger, allowing you to charge two batteries simultaneously.

SIG also includes an option for external battery support, letting users connect a battery pack via USB-C for extended field use. The device does not allow for in-unit charging, so batteries must be removed for recharging.

Optics and Image Quality

One of the most critical aspects of any thermal scope is its image clarity, and the ECHO SV50-LRF does not disappoint. The base magnification starts at 2x, which provides a wide field of view ideal for close-range scanning or hog hunting. While some might prefer a 3x base for extended range hunting, the 2x magnification offers a broader perspective, with 8x digital zoom available for long-range identification.

The sight also includes eight color palettes (such as white-hot and black-hot), with an option to disable unused palettes for faster cycling. The ECHO SV50-LRF’s 50mm objective lens and less than 20mK sensitivity enable it to capture detailed images even at distances of 200 to 250 yards. During testing, it demonstrated excellent performance in low-contrast settings, allowing users to identify specific features on animals at significant distances.

User Interface and Controls

SIG designed the ECHO SV50-LRF with user-friendly controls and an intuitive menu system. The four-button control panel acts as a D-pad, making it simple to navigate through settings. Users can access brightness, contrast, sharpness, and other display settings with ease, customizing the screen based on environmental conditions and personal preferences.

For zeroing the sight, SIG includes a straightforward process. After aiming and firing, users can adjust the reticle using the D-pad based on the shot’s impact location. This sight-in process is simplified and can be completed in just a few steps, allowing users to get the device calibrated quickly.

Mount and Compatibility

The ECHO SV50-LRF comes with a sturdy cantilever mount that provides a firm lockup, allowing the optic to sit far back on the rifle for comfortable eye relief. The design keeps the device away from the charging handle on most AR-style rifles, making it a versatile choice for both bolt-action and semi-automatic platforms.

The device attaches securely, with 65-inch pounds of torque recommended to ensure zero retention and repeatability. The mount height ensures that height-over-bore is sufficient for accurate adjustments, even with taller rifles.

Photo and Video Recording

The SIG ECHO SV50-LRF can capture photos and videos of what you see through the thermal optic. Users can trigger recording with a button on the device or use the shot detection feature to automatically start recording. This feature captures 10 seconds before and after each shot, creating a video clip without any manual intervention.

Though the video feature works well, some users have noted minor glitches in the audio recording. SIG has stated that firmware updates may address this issue, but it’s something to keep in mind if recording is a key feature for you.

Durability and Warranty

The SIG ECHO SV50-LRF stands out for its IP67 waterproof rating, making it fully submersible up to 1 meter. This means that rain, humidity, and moisture will not affect the optic’s performance, providing peace of mind during rough field conditions.

Perhaps the most impressive aspect of the ECHO SV50-LRF is its lifetime warranty. Thermal optics are a significant investment, and the industry typically offers only 2- to 5-year warranties. SIG’s lifetime warranty ensures that if the optic fails, they will repair or replace it, even years down the road, which is a game-changer in thermal optics.

Performance in the Field

In the field, the ECHO SV50-LRF impressed with its quick and accurate range-finding capabilities and detailed imaging. The laser range finder reliably measured distances up to 1,200 yards, and the image clarity held up exceptionally well at 200-250 yards. This makes it a strong choice for hunters and tactical shooters who need a thermal optic that performs well at mid-range distances.

Color Palettes and Digital Zoom

With eight selectable color palettes and customizable digital zoom, users can quickly tailor the image to their preferences. The digital zoom can be customized to skip magnifications that aren’t needed, enabling faster zoom adjustments.

Is the SIG ECHO SV50-LRF Worth the Investment?

The SIG ECHO SV50-LRF is a thermal optic designed for those who need reliability, durability, and advanced features. Its integrated LRF, intuitive controls, and long battery life make it versatile and user-friendly, while the lifetime warranty solidifies its value.

With a base MSRP of $5,999, the ECHO SV50-LRF is positioned in the premium market. However, its features, performance, and long-term support make it an attractive option for those looking to invest in a high-quality thermal sight with range-finding capabilities.

FAQs

How does the ECHO SV50-LRF’s range finder perform in low visibility?
The laser range finder performs well even in challenging weather conditions, consistently reaching up to 1,200 yards.

Is the ECHO SV50-LRF suitable for long-range shooting?
While ideal for ranges up to 300 yards, the 2x base magnification limits long-range detail. For distances beyond 400 yards, alternative optics may be more appropriate.

What is the expected battery life for the ECHO SV50-LRF?
The sight provides around 6 hours of continuous use with two 18650 batteries, with four batteries included for extended use.

Does the ECHO SV50-LRF have a recording feature?
Yes, it can record photos and video, with options for manual and shot-detection-activated recording.

What sets the ECHO SV50-LRF’s warranty apart?
SIG offers a lifetime warranty, covering repairs or replacements if the optic fails, a rarity in thermal optics warranties.

The SIG ECHO SV50-LRF represents a substantial investment, but with its powerful features, durability, and unique lifetime warranty, it’s a top choice for anyone serious about thermal imaging.