Is the 35-384 worth the extra over the 25-256?

Yes if you regularly scan past 200-300 yards or need to judge antler size and species at distance. The 384x288 sensor and 35mm lens resolve detail the 256x192 cannot. Inside 150 yards the difference is small.

Which has better image quality at night?

The 35-384. It has more pixels on target and the same sub-15 mK sensitivity, so it holds detail better in low contrast. The 25-256 is still usable and buyers report clear images at 175 yards.

Do both have a laser rangefinder?

Yes. Both include a built-in 1,000 m laser rangefinder, and the 35-384 is rated to ±1 m accuracy. That is the main reason to pick either over a rangefinder-less thermal bino.

How long do the batteries last?

Both are rated up to 8 hours on removable rechargeable 18650 cells, and both ship with four batteries and a charger. Cold weather will cut that runtime, so carry spares.

Which is easier to carry?

The 25-256 is the smaller, lighter unit thanks to its 25mm lens. The 35-384 weighs 2.01 lbs and measures 8.7 x 5.6 x 2.8 inches, which is a lot to hold up for long glassing sessions.

Can both record video?

Yes. Both have 64GB internal memory, Wi-Fi and a 3840x2160 digital day/night channel for recording and sharing images and video.

AGM ObservIR 35-384 4-20x LRF Thermal Binoculars vs AGM ObservIR 25-256 4.5-18x LRF Thermal Binoculars

Buy the ObservIR 35-384 if you need the sharper thermal image and longer detection range; buy the 25-256 if budget matters more than resolution. Both are AGM dual-channel thermal/digital binoculars with a 1,000 m laser rangefinder, 64GB storage, Wi-Fi and 8-hour 18650 battery life. The 35-384 carries the larger 35mm lens and 384x288 sensor; the 25-256 uses a 256x192 sensor with a 25mm lens and costs less.

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