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Burris BTH 35 v2

Burris's 400×300 handheld thermal with a 35 mm F1.0 lens, 1280×960 display, Wi-Fi app control and a tripod thread; a US product sold in small numbers in the UK.

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Manufacturer specification

TechnologyThermal
Sensor400×300
Pixel pitch12 µm
Lens35 mm
Digital zoomup to 4x
Field of view7.8°
DisplayLCOS 1280x960
Wi-Fi / appyes
Battery lifeup to 5 h
Weight624 g

Figures as published by Burris (source). A spec that is not listed is one the maker does not state, not a zero. Detection range is for a 1.8 m object under the maker's conditions; recognition is typically a third of it.

Type: Thermal monoculars Brand: Burris

The BTH 35 v2 is the current 35 mm model in Burris's handheld thermal line. It uses a 400×300, 12 µm detector behind a 35 mm F1.0 manually focused lens, giving a 7.8° field of view and digital zoom from 1x to 4x at 50 Hz. Burris's page does not state the base optical magnification, NETD, detection range or an IP rating, so those fields are blank; its marketing copy mentions tracking targets beyond 750 yards, which is not a specification row.

It has a 1280×960 colour LCOS display with 17 mm of eye relief, five palettes, Wi-Fi for control from a phone, and a ¼-20 tripod thread. Burris quotes at least 5 hours of run time at 25 °C and USB-C charging; the battery type is not stated. It is 249 mm long and 22 oz (624 g).

It suits buyers who want a large, steady unit for a fixed position, and who can find it in the UK; most of its rivals here are cheaper and lighter for the same sensor size.

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