DNT Optics Hydra HS635R 640×512 Multi-Function Thermal Scope with Laser Rangefinder & Ballistic Calculator

Limited-Time Offer: Get 4× 18650 rechargeable batteries and a free ADM QD mount ($150+ value) exclusively from Southern Precision Outdoors.

Professional-Grade Thermal Performance

The DNT Optics Hydra HS635R is one of the most advanced multi-function thermal optics in its class—combining a standalone scope, clip-on, and handheld monocular in one CNC-machined, aircraft-grade aluminum body. This 640-core thermal powerhouse delivers professional-level performance for hunters who demand long-range precision, crystal-clear imagery, and unmatched adaptability.

Powered by a 12 μm, ≤18 mK uncooled VOx infrared sensor (640×512) and paired with a 35 mm F/1.0 Germanium objective lens, the Hydra HS635R provides exceptional detection range and clarity even in fog, rain, or heavy humidity. DNT’s Image Super Resolution (ISR) technology enhances detail to near-960 equivalent resolution while maintaining smooth motion through its 50 Hz refresh rate. With 1.5× base magnification and digital zoom up to 6×, hunters can easily identify and track heat signatures hundreds of yards away—making it ideal for predator, hog, or tactical use.

Precision Ranging & Ballistic Intelligence

The Hydra’s integrated laser rangefinder (LRF) provides accurate distance measurement out to 1,300 yards, ensuring confident long-range engagements. Its onboard ballistic calculator instantly computes holdover and trajectory corrections—removing the guesswork from every shot. Hunters can store and adjust ballistic profiles directly within the device or fine-tune them via the DNT App, available for iOS and Android.

The result? Faster, cleaner, and more ethical shots at range—backed by data-driven precision.

Rugged, Compact, and Field-Ready

Weighing just 15 ounces, the Hydra HS635R is built for mobility without compromise. CNC-machined from a solid block of 6061 aircraft-grade aluminum, it’s IP67 waterproof, shock-rated up to .50 BMG, and fully weatherproof for extreme hunting environments. Large tactile controls and a fast manual focus ring allow easy operation even with gloves, while the forgiving 2.5” eye relief and wide eye box make it comfortable for extended observation.

Powered by flat-top 18650 rechargeable batteries, the Hydra delivers 4+ hours of runtime per cell and supports USB Type-C external power for long sessions in the field.

Next-Level Viewing & App Integration

The 1024×768 Micro-OLED display delivers crisp, high-contrast visuals in real time. Integrated Wi-Fi connectivity pairs with the DNT App, allowing users to stream live video, record photos or footage, and manage saved media from their smartphone. The Hydra stores up to 32 GB of internal media and supports photo/video capture with a single control button.

Three Optics in One Device

1. Standalone Scope – Run the Hydra as a dedicated thermal optic with full reticle overlay and ballistic compensation.

2. Clip-On Mode – Attach it in front of your LPVO or prism sight for instant thermal capability without re-zeroing (recommended below 4×).

3. Handheld Monocular – Go mobile for scanning, scouting, or tracking with lightweight balance and ergonomic grip.

This flexibility makes the Hydra HS635R one of the most capable and value-packed 640-class thermals available today.

Trade In, Upgrade, and Save

At Southern Precision Outdoors, we make upgrading affordable. Trade in your old thermal or night vision optic through our SPO Trade-In Program and earn credit toward the new Hydra HS635R.
Call or text us today at 678-630-9758 for a fast quote and to secure your trade-in value.

All DNT Optics products include a 5-Year Transferable Warranty and U.S. service support.

Key Features

• 640×512 Resolution VOx Thermal Sensor

• 12 μm Pixel Pitch, ≤18 mK NETD Sensitivity

• 35 mm F/1.0 Germanium Objective Lens

• 1.5× Base Magnification / 6× Digital Zoom

• 50 Hz Refresh Rate, 50 FPS Sensor Output

• Built-in 1,300 yd Laser Rangefinder (LRF)

• Onboard Ballistic Calculator

• Image Super Resolution (ISR) Enhancement

• Micro-OLED 1024×768 Display

• 32 GB Internal Storage with Video/Photo Capture

• Wi-Fi + DNT App for Streaming & Sharing

• Aircraft-Grade CNC-Machined Aluminum Body

• IP67 Waterproof / .50 BMG Recoil Rated

• Compact: 7.9″ × 2.7″ × 2.0″ | Weight: 15 oz

• Battery: Flat-Top 18650, 4 h Runtime

• External USB Type-C Power Input

• Operating Temperature: –4 °F to 122 °F

• 5-Year Transferable Warranty