Bering Optics · Phenom 640-35

How far you can see a person

112 m make out detail182 m tell what it is729 m spot it┆ maker’s claim

501002005001k2k5k m

Calculated from the sensor's pixel pitch and the lens focal length, for clear air.

Bering Optics quotes 1,350 m, 1.9× our figure, because makers usually measure against a person’s full height rather than their width. Why the numbers differ

Bering OpticsHandheld monocular · 640-class

Bering Optics Phenom 640-35

Approx. price: ~$2,695
Sensor: 640×480 · 12 µm
Lens: 35 mm · 2×
Weight: 14.1 oz

Buy from Bering Optics

Price and availability on Bering Optics’s site may differ.

Best for

Walk-and-scan glassing from a jacket pocket

01Specifications

As published by Bering Optics. Sources: usa.beringoptics.com (spec table BE46236: 'standard Li-ion cell' battery not mapped to an enum type; features list analog video out and 8 GB snapshot storage but no video recording claim; 4-year warranty), nightvisionuniverse.com + basicprecision.com (price $2,695 in stock; NVU sells it as BE46235 'w, Wi-Fi', which supplied wifi), note: maker site is http-only (https does not answer).

Sensor: 640×480
Pixel pitch: 12 µm
NETD: <50 mK
Refresh rate: 50 Hz
Lens: 35 mm
Base magnification: 2×
Digital zoom: up to 16×
Display: 1280x980 OLED
Claimed detection: 1,350 m
Claim basis: 0.75 sq m (8 sq ft) object
Run time: 5 h
Weight: 14.1 oz
Length: 7.3″
Laser rangefinder: No
Ballistic calculator: No
Wi-Fi: Yes
IP rating: IP67
Warranty: 4 years
Approx. price: ~$2,695

02Pros and cons

From the published specs, not owner reports.

For it

640×480 sensor, 2.8× the detail of an entry-level 384
Waterproof (IP67), survives a dunking

Against it

No rangefinder, so you judge distance by eye
Zoom past 2× is digital and gets blurry

03Compare the 640-35

04Related units

More from Bering Optics →All 640-class →All 35 mm →

ATN BlazeHunter 635 LRF — 640×512 thermal handheld monocular

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

Pulsar Axion 2 LRF XG35 — 640×480 thermal handheld monocular

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

RIX Titan T6 — 640×480 thermal handheld monocular

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