US prices from official stores, checked on November 9, 2026 · 14 thermal monoculars compared · no paid scores

Burris BTH35 v3 review

Burris · Thermal monocular · No. 14 of 14 in our ranking

8.4Good · out of 10

A 35 mm lens on a 400×300 sensor gives real reach, but ≤50 mK, 630 g and a $2,160 MSRP.

  • 400x300, 12 µm sensor with a 35 mm F1.0 lens: the narrowest field here (7.8°)
  • Two hot-swappable 18650 cells, at least 5 hours by Burris figures
  • Picatinny accessory rails and the BurrisConnect app
$2,160

Burris (MSRP, dealer list), price checked on November 9, 2026

View offer at Burris ↗$2,160Burris (MSRP, dealer list)
Compare with its rivals ↗
Specs
BrandBurris
ModelBTH35 v3
Sensor400×300 px, 12 µm pixel pitch, 50 Hz
Sensitivity (NETD)≤50 mK at F1, 25 °C (Burris BTH v3 manual)
Objective lens35 mm F1
Magnification1-4x digital zoom
Horizontal field of view7.8°
Stated detection range1,000 m (1,100 yd) on a deer, Burris figure
Computed reach (our formula)1,750 m (1,914 yd): 35 mm ÷ 12 µm × 1.8 m ÷ 3 px
DisplayLCOS 1280×960
Laser rangefinderNo
Battery2 x 18650, at least 5 h at 25 °C (Burris figure), hot-swappable
RecordingPhoto and video
Wi-Fi appYes
Weight630 g (22.2 oz), ≤630 g / 22 oz (Burris manual)
Water protectionWaterproof (no IP code stated)
Warranty3-year US limited warranty on thermal products (Burris BTH v3 manual)
Checked price$2,160 on November 9, 2026 (MSRP)
AvailabilityBurris lists the MSRP and sends buyers to dealers
In the box

Not stated by the manufacturer.

Availability

Burris lists the MSRP and sends buyers to dealers.

Where to buy
Burris (MSRP, dealer list) ↗$2,160

Official Burris product page ↗

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How we score

Score out of 10 from Burris's published figures and the checked US price, with the same 10 criteria for every monocular. A criterion without a figure is left out and the other weights are rescaled.

Raw score (weighted average)6.6/10
Displayed score (editorial scale)8.4/10
Sensor resolution (20%)7.6/10
Reach (lens / pixel pitch) (15%)9.0/10
Thermal sensitivity (NETD) (10%)4.5/10
Display resolution (5%)9.0/10
Battery life (10%)5.0/10
Weight (with battery) (10%)6.2/10
Laser rangefinder (5%)4.0/10
Water protection (5%)7.0/10
Warranty (5%)7.5/10
Price (15%)5.3/10

Read the full methodology ↗

Price checked on November 9, 2026
Data from the official Burris pages
Score from our public formula

By Jake Turner, the editorial team · Updated November 9, 2026

Compared with its rivals

The two alternatives we would look at next, with their key figures.

Compare: side-by-side table ↗

Burris BTH35 v3

Burris BTH35 v3

8.4Good · out of 10
  • 400×300 sensor, 35 mm lens
  • Computed reach: 1,750 m
  • Checked price: $2,160
This monocular ↑
Vortex Veil 400

Vortex Veil 400

8.5Very good · out of 10
  • Same sensor class, lighter, lifetime warranty, $2,299.99 MSRP
  • 400×300 sensor, 25 mm lens
  • Computed reach: 1,250 m
  • Checked price: $2,299.99
Read the review ↗
Pulsar Axion 2 XG35

Pulsar Axion 2 XG35

8.8Very good · out of 10
  • 640 sensor, same reach, IPX7, $2,499.97
  • 640×480 sensor, 35 mm lens
  • Computed reach: 1,750 m
  • Checked price: $2,499.97
Read the review ↗

A 400×300 sensor behind a 35 mm lens

Sensor (12 µm pixels) and lens stated by Burris, NETD 50 mK (the figure we score). With our formula (focal length ÷ pixel pitch, 3 pixels on a 1.8 m target) that gives a computed reach of 1,750 m.

What a night out with it looks like

Burris's v3 manual lists a 400×300 VOx sensor with 12 µm pitch, NETD ≤50 mK at F1 and 25 °C, a 35 mm F1.0 lens with manual focus, 1 to 4x digital zoom, a 1280×960 color LCOS, nine palettes and a detection distance of 1,000 m (1,100 yd) on a deer for the BTH35.

Our calculator, which only looks at lens and pixel size, gives about 2,600 m to detect a person and about 365 m (400 yd) to recognize a coyote, the same as the Pulsar Axion 2 models. The 7.8° × 5.9° field is the trade-off: you see far, through a straw.

Battery design is good: two 18650 cells, at least 5 hours at 25 °C by Burris figures, swappable without losing power, plus USB-C. Burris includes Picatinny accessory rails and a 1/4-20 tripod thread.

The catch

Sensitivity, size and price. ≤50 mK is the highest NETD figure we list, which costs contrast on humid nights. At 630 g and 9.8 inches it is the third heaviest model here. And the $2,160 MSRP is close to the Pulsar Axion 2 XG35 ($2,499.97), which has a 640 sensor and IPX7.

Water protection is stated as "Waterproof: YES" in the manual without an IP code, and the warranty is 3 years in the US (2 years internationally), per the manual.

Great if…

  • you glass long fields and want a narrow, magnified view (7.8° across)
  • you want to hot-swap batteries without powering down
  • you want accessory rails to add a light or a mount

Skip it if…

  • you scan woods or close cover: 7.8° is the narrowest field here
  • you want strong contrast on damp nights (≤50 mK, the highest NETD we list)
  • you want light and compact (22 oz)

What Burris promises

Points taken from the official US product page.

  • 400x300, 12 µm sensor with a 35 mm F1.0 lens: the narrowest field here (7.8°)
  • Two hot-swappable 18650 cells, at least 5 hours by Burris figures
  • Picatinny accessory rails and the BurrisConnect app
By the numbers
Sensor
400×300
Lens
35 mm
Computed reach
1,750 m

Sensor, power and recording

Sensitivity: ≤50 mK at F1, 25 °C (Burris BTH v3 manual). Battery: 2 x 18650, at least 5 h at 25 °C (Burris figure), hot-swappable. Photo and video recording.

By the numbers
Battery
5 h
Weight
630 g
Warranty
3 years

Price and availability

US price checked on November 9, 2026 at the Burris (MSRP, dealer list): $2,160. Burris lists the MSRP and sends buyers to dealers. The price at the store is the one that applies.

By the numbers
Checked price
$2,160

Buying advice

Burris lists the BTH35 v3 at a $2,160 MSRP on its product page (November 9, 2026) and sells through dealers, where prices may be lower. If you like its reach, also look at the Axion 2 XG35 and the Vortex Veil 400.

The verdict

Pick the Burris BTH35 v3 if reach and swappable power matter more than weight: its 400×300, 12 µm sensor sits behind a long 35 mm F1.0 lens, so it reaches as far as the 640 Pulsars, with two hot-swappable 18650 batteries, Picatinny accessory rails and the BurrisConnect app. It scores 8.4/10, last in our overall list: ≤50 mK, 630 g, no IP code and a $2,160 MSRP.

Burris (MSRP, dealer list)

How it compares

The Burris BTH35 v3 next to the two rivals above, from the official spec sheets and the US prices checked on November 9, 2026.

Comparison tool
How the Burris BTH35 v3 compares with its rivals
Burris BTH35 v3Burris BTH35 v3Burris8.4$2,160400×300 · 35 mm · 630 gWi-Fi app3 years
Vortex Veil 400Vortex Veil 400Vortex8.5$2,299.99400×300 · 25 mm · 377 gNot statedLifetime
Pulsar Axion 2 XG35Pulsar Axion 2 XG35Pulsar8.8$2,499.97640×480 · 35 mm · 380 gWi-Fi app3 years

The score in detail

Burris BTH35 v3 gets 8.4/10 with our overall weights, from a raw weighted average of 6.6/10. The scales are on the methodology page.

Sensor resolution

7.6/10

Weight: 20% of the overall score

Reach (lens / pixel pitch)

9.0/10

Weight: 15% of the overall score

Price

5.3/10

Weight: 15% of the overall score

Thermal sensitivity (NETD)

4.5/10

Weight: 10% of the overall score

By use, with the same figures and other weights: for hunting 8.4/10 (No. 11).

Frequently asked questions

What is the warranty on the Burris BTH35 v3?

The Burris v3 manual lists a 3-year US limited warranty for the thermal handhelds (2 years outside the US).

How far can the Burris BTH35 v3 see?

Burris states 1,000 m (1,100 yd) to detect a deer. By our calculator, the 35 mm lens on 12 µm pixels recognizes a coyote-sized animal at about 365 m.

What score does the Burris BTH35 v3 get?

8.4/10 ("Good") with our overall formula, No. 14 of 14 in our main ranking. The score comes from 10 criteria read on the official spec sheet and the checked US price.

Where can you buy the Burris BTH35 v3?

Our button goes to the Burris (MSRP, dealer list), where we read the price on November 9, 2026. The link goes straight to the store.