Half the weight, half the glass, one eye · review
A 12x55 monocular with a 20 mm BAK-4 prism, FMC optics, IPX7 sealing and a supplied smartphone adapter.
The bottom line The brightest monocular in this group by its own arithmetic, and the one that publishes the figures to prove it.
Every other 12x monocular here uses a 50 mm or 52 mm objective. Fifty-five gives a 4.6 mm exit pupil — closer to what a dark-adapted eye can use, and brighter at dusk where these instruments earn their keep.
Field of view at 352 feet per 1000 yards. Prism size at 20 mm. Sealing at IPX7 with a nitrogen filling. Coating as fully multi-coated. That is four real specifications, and the prism figure in particular almost never appears on this shelf.
It holds a phone in line with the eyepiece so the camera sees what the eye would. What it cannot do is remove the shake: at twelve times, a hand-held monocular with a phone hanging off it is less steady, not more. A rest of some kind is the accompanying requirement.
IPX7 leaves the dust digit unstated. For a monocular that lives in a coat pocket alongside keys and grit, that is worth knowing — and it is a distinction the listing itself makes clearly enough to be read.
German, French, Italian and Spanish Amazon stores ran from 90 € to 120 € on the day of the survey.
American and British Amazon stores list it in local currency, which the euro range above sets aside.
Figures as Keepa reported them on the day this page was last updated. Stock and pricing shift without warning.
Prices quoted in this text were read on 17 September 2026. The live price is at the top of the page.
| Aperture | 55 mm |
|---|---|
| Magnification | 12x, fixed by the design |
| Exit pupil | 4.6 mm — 55 divided by 12 |
| True field of view | 352 ft at 1000 yd, as the maker publishes it |
| Close focus | Not published by the maker. |
| Prism | 20 mm BAK-4, per the maker |
| Coatings | Fully multi-coated |
| Sealing | IPX7, nitrogen-filled per the maker |
| Weight | Not published by the maker. |
| Phone adapter fit | Not published by the maker. |
| Supplied accessories | Smartphone holder, hand strap |
| Amazon reference | B07B8XTS3Z (same reference on 6 Amazon marketplaces) |
| EAN | 0607994607040 |
A little over six and a half degrees — a wide field for 12x, and wide enough to sweep with. Publishing the figure at all puts this listing ahead of most of its neighbours.
The X means no dust rating is stated. The 7 covers temporary immersion. IP68 claims both dust-tightness and continuous immersion to a stated depth.
10–30x zoom · 40 mm objective · 4 mm to 1.3 mm exit pupil
A zoom monocular running from 10x to 30x on a 40 mm objective, with BAK4 prisms, dual focus and a nitrogen-filled aluminium body.
Best for: Daytime viewing where one instrument has to cover several distances
≈ $36 / £28 / €26
12x · 50 mm · 435 g · waterproof and nitrogen-filled
A 12x50 monocular with BaK-4 glass, UR coating, a twist-up eyecup and a nitrogen-filled waterproof body, published at 435 g.
Best for: A pocket instrument for dusk that is meant to be used in poor weather
≈ $130 / £96 / €79
10–30x zoom · 50 mm objective · supplied with phone holder and tripod
A 10–30x zoom monocular on a 50 mm objective, IPX7-sealed and nitrogen-filled, supplied with a phone holder and a metal tripod.
Best for: Daytime and dusk viewing with a phone, where the tripod does the steadying
≈ £31 / €24
