DNT Optics HOUND H635R — Thermal Imaging Monocular with Laser Rangefinder & Ballistic Calculator

The HOUND H635R puts a high-resolution thermal sensor, a precision laser rangefinder and a built-in ballistic calculator into one handheld unit — so you can spot game long before they know you’re there, range them instantly, and get a holdover solution without reaching for a separate rangefinder or ballistic app. Built for long-range hunters who want elite performance in a single, rugged package.

See it in action

Key features

• 640×512 thermal sensor: Uncooled infrared sensor with a 35mm lens, 50 FPS refresh and ≤18mK thermal sensitivity — a sharp, responsive picture even on cool targets at distance.
• AI-enhanced image super resolution: Cleans up and sharpens the thermal image for better clarity at range.
• Built-in laser rangefinder: Ranges from 5 to 1,200 yards without switching devices.
• Integrated ballistic calculator: Custom ballistic profiles combine 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.
• 2–8x digital magnification: From a 2x 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.

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	640 × 512
Sensor type	Uncooled infrared, 12×12μm pixel size
Objective lens	35mm
Frame rate	50 FPS
Thermal sensitivity (NETD)	≤18mK @ 25°C
Base / digital magnification	2x base, 2–8x digital
Field of view	21.9 × 17.6 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 hours operating time
Charging	5V USB Type-C
Onboard memory	32GB built-in
Connectivity	WiFi, DNT companion app
Weight	10.93 oz
Dimensions	6.2″ × 2.2″ × 2.8″
Waterproof rating	IP67 (dust and water resistant)
Operating temperature	−4°F to 122°F

Built to work in the field

Rated IP67, the HOUND H635R is sealed against dust and water — rain, mud, and the odd dunking won’t put it out of action. It’s built for the conditions you actually hunt in, not just a fair-weather spec sheet.

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 H635R thermal monocular
• Carrying pouch
• Lanyard and wrist strap
• 2× 18650 flat-top batteries
• Battery charger with USB and data cables
• Lens cleaning cloth
• User manual and quick start guide

Who it’s for

Built for long-range hunters and anyone working at night or in low visibility who wants detection, ranging and a ballistic solution in one handheld unit — hog hunters covering open ground, predator hunters working tree lines, or anyone who needs to positively identify and range a target before deciding whether to take the shot.

Warranty

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