DNT Optics HOUND H325R 384×288 Thermal Monocular with Laser Rangefinder & Ballistic Calculator (25mm)

DNT Optics HOUND H325R — Ballistic Thermal Monocular with Laser Rangefinder (25mm)

The DNT Optics HOUND H325R is the mid-range sweet spot in DNT's ballistic thermal monocular lineup, pairing the same 384×288 / 12 μm sensor found in the H315R with a longer 25mm objective lens for tighter magnification and extended detection range. If you hunt open country — Western prairie dogs, Texas senderos, or Southern bean-field bucks — the H325R's 2.5× base magnification and 10× maximum digital zoom let you identify animals at distances where the wider-angle H315R begins to lose detail. You still get the full-featured laser rangefinder (5–1,200 yds) and onboard ballistic calculator in a sub-11-ounce, IP67-rated body that fits in a cargo pocket.

Thermal Sensor & Image Quality

The H325R's 384×288 uncooled infrared sensor with 12 μm pixel pitch and ≤18 mK NETD delivers the same high-sensitivity thermal performance as the rest of the HOUND family. DNT's AI-enhanced Image Super Resolution (ISR) preserves edge clarity during digital zoom, pushing the 384-class sensor toward 640-equivalent sharpness at higher magnifications. The 25mm objective lens narrows the field of view to 18.4 yd × 13.8 yd at 100 yards compared to the H315R's 30.7 yd, but the trade-off is noticeably better target definition at 200–400+ yards — exactly where predator and big-game hunters need it. Four thermal palettes (White Hot, Black Hot, Red Hot, Iron Hot) adapt to any terrain or contrast condition.

Laser Rangefinder & Ballistic Calculator

Identical to every HOUND model, the H325R's integrated Class 1 eye-safe laser rangefinder measures from 5 to 1,200 yards. Range data feeds directly into the onboard ballistic calculator, which generates real-time aiming solutions based on your custom profile — bullet weight, muzzle velocity, ballistic coefficient, and zero range. The system supports both rifle and crossbow profiles, and adjustments can be made on-device or through the DNT App over Wi-Fi.

Display & Optics

The 1024×768 Micro-OLED display runs at 50 Hz for lag-free viewing. Base magnification sits at 2.5× with digital zoom up to 10×, giving the H325R noticeably more reach than the 1.5×/6× H315R. Eye relief remains a comfortable 25 mm with fast diopter adjustment for eyeglass wearers.

Build Quality & Connectivity

Machined from aircraft-grade aluminum, the H325R carries the same IP67 dust-and-water rating, runs on a single 18650 flat-top battery for up to 5.5 hours, and accepts USB-C external power. Built-in 32 GB storage records photo and video with reticle and ballistic overlays. Wi-Fi pairs with the DNT App for streaming, file transfer, firmware updates, and profile management.

What's in the Box

HOUND H325R monocular, carrying pouch, lanyard, wrist strap, 2× 18650 flat-top batteries, 4-port charger, USB-C data cable, USB-C charging cable, lens cleaning cloth, user manual, and quick-start guide.

Warranty

2-year manufacturer warranty, extendable to 3 years with free product registration at dntoptics.com. Covered by Carolina Sportsman Outfitters' satisfaction guarantee and 0% interest financing.

Specifications

Frequently Asked Questions

Why choose the H325R over the H315R?

The H325R's 25mm lens gives you 2.5× base magnification and up to 10× digital zoom versus the H315R's 1.5×/6×. This means better target identification at 200–500+ yards. The trade-off is a narrower field of view (18.4 yd vs. 30.7 yd at 100 yd). Choose the H325R for open-country hunting and the H315R for close-range scanning in timber or thick cover.

Is the H325R good for predator hunting at night?

Absolutely. The 384×288 / ≤18 mK sensor detects coyote-sized heat signatures well beyond typical shooting distances. Pair the HOUND with your favorite daytime scope — use the thermal to locate and range, then transition to your rifle for the shot. The ballistic calculator provides your holdover instantly.

Can I share ballistic profiles between HOUND models?

Yes. Profiles created in the DNT App can be pushed to any HOUND (H315R, H325R, or H635R) over Wi-Fi. If you own multiple HOUND units, you only need to build your profiles once.

What battery should I use?

The HOUND requires a flat-top 18650 lithium-ion battery. Two batteries and a 4-port charger are included. Standard button-top 18650 cells may not make contact — confirm flat-top before purchasing spares.

Does the H325R record video with the ballistic overlay?

Yes. Every photo and video captured on the HOUND includes the reticle, range reading, and ballistic solution baked into the file. This makes recordings useful for shot review, load development documentation, and sharing hunts on social media.