← All units
Calculated from the sensor's pixel pitch and the lens focal length, for clear air. 
How far you can see a person
112 m make out detail182 m tell what it is729 m spot it
501002005001k2k5k m
DNT OpticsHandheld monocular · 640-class · Laser rangefinder
DNT Optics Hound H635R
- Approx. price
- ~$2,000
- Sensor
- 640×512 · 12 µm
- Lens
- 35 mm · 2×
- Weight
- 10.9 oz
Buy from DNT Optics
Price and availability on DNT Optics’s site may differ.
Best for
Walk-and-scan glassing from a jacket pocket
01Specifications
As published by DNT Optics. Sources: dntoptics.com.
- Sensor
- 640×512
- Pixel pitch
- 12 µm
- NETD
- ≤18 mK
- Refresh rate
- 50 Hz
- Lens
- 35 mm
- Digital zoom
- up to 8×
- Field of view
- 12.5° horizontal
- Display
- 1024x768 OLED
- Run time
- 5 h
- Battery type
- 18650
- Weight
- 10.9 oz
- Length
- 6.2″
- Wi-Fi
- Yes
- IP rating
- IP67
- Warranty
- 2 years
- Approx. price
- ~$2,000
02Pros and cons
From the published specs, not owner reports.
For it
- 640×512 sensor, 3× the detail of an entry-level 384
- Sensitive sensor that picks out small heat differences on humid or rainy nights (56th-best of 285 that publish it)
- Built-in laser rangefinder that feeds the ballistic calculator
- Takes 18650 batteries you can swap in the field
- Waterproof (IP67), survives a dunking
Against it
- Zoom past 2× is digital and gets blurry
03Compare the H635R
04Related units
ATNHandheld monocular
ATN BlazeHunter 635 LRF
Est. detection
729 m
Maker’s claim
1,830 m
- Sensor
- 640×512
- Pitch · Hz
- 12 µm · 50
- Lens
- 35 mm
LRF · 12.7 oz~$1,895
PulsarHandheld monocular
Pulsar Axion 2 LRF XG35
Est. detection
729 m
Maker’s claim
1,750 m
- Sensor
- 640×480
- Pitch · Hz
- 12 µm · 50
- Lens
- 35 mm
LRF · Swappable battery · 16.6 oz~$3,000
RIXHandheld monocular
RIX Titan T6
Est. detection
729 m
Maker’s claim
1,820 m
- Sensor
- 640×480
- Pitch · Hz
- 12 µm · —
- Lens
- 35 mm
LRF~$2,599