DNT Optics HOUND H325R — Thermal Imaging Monocular with Laser Rangefinder & Ballistic Calculator

The HOUND H325R combines thermal imaging, a built-in laser rangefinder and a ballistic calculator in one compact handheld unit — a lighter, more affordable step into the HOUND range for hunters who want reach and portability without the size and cost of the flagship model. Spot, range and get a holdover solution without switching between devices.

See it in action

Key features

• 384×288 thermal sensor: Uncooled infrared sensor with a 25mm lens, 50 FPS refresh and ≤18mK thermal sensitivity.
• Built-in laser rangefinder: Ranges from 5 to 1,200 yards without switching devices.
• Integrated ballistic calculator: Combines with your ranged distance to give you a holdover solution on the spot.
• 1024×768 Micro-OLED display: Crisp, bright viewing at 50Hz with 25mm eye relief for comfortable, fatigue-free glassing.
• 2.5–10x digital magnification: From a 2.5x base magnification, so you can scan wide and then zoom in to confirm.
• WiFi-enabled with DNT app support: Stream, review and manage footage from your phone.
• Built-in 32GB memory: Record what you see without needing a separate memory card.
• IP67 rated: Dust and water resistant, built to keep working through rain, dust and mud.
• Compact and light: 10.55 oz, noticeably smaller and lighter than the flagship HOUND H635R.

Choose the palette that suits your terrain

Switch between four thermal colour palettes on the fly, depending on your target and background:

Full specifications

Thermal sensor resolution	384 × 288
Sensor type	Uncooled infrared, 12×12μm pixel size
Objective lens	25mm
Frame rate	50 FPS
Thermal sensitivity (NETD)	≤18mK @ 25°C
Base / digital magnification	2.5x base, 2.5–10x digital
Field of view	18.4 × 13.8 yd @ 100 yards
Display	1024×768 Micro-OLED, 50Hz
Eye relief	25mm
Laser rangefinder range	5–1,200 yards
Ballistic calculator	Integrated, custom ballistic profiles
Thermal palettes	White Hot, Black Hot, Red Hot, Iron Hot
Battery	2× 18650 flat-top (included), ~5.5 hours operating time
Charging	5V USB Type-C
Onboard memory	32GB built-in
Connectivity	WiFi, DNT companion app
Weight	10.55 oz
Dimensions	6.1″ × 1.9″ × 2.8″
Waterproof rating	IP67 (dust and water resistant)
Operating temperature	−4°F to 122°F

Designed to feel right in your hand

An ambidextrous, ergonomic body puts every control within reach of your fingers and thumb, so you can power on, adjust and capture without breaking your grip or your view through the eyepiece.

A closer look

What’s in the box

• HOUND H325R thermal monocular
• Carrying pouch
• Lanyard and wrist strap
• 2× 18650 flat-top batteries
• Battery charger with USB and charging cables
• Lens cleaning cloth
• User manual and quick start guide

Who it’s for

A great entry point into thermal for hunters who want detection, ranging and a ballistic solution in one handheld unit, in a smaller and lighter package than the flagship HOUND H635R — ideal if portability and price matter as much as outright sensor resolution.

Warranty

Covered by DNT Optics’ 5-year warranty with product registration.