Half the weight, half the glass, one eye · review
A 16x52 monocular with BAK4 prisms, SMC coatings and a nitrogen-filled waterproof body, sold for hiking, birds and concerts.
The bottom line A long-reaching pocket monocular whose exit pupil and steadiness both argue for daytime use.
Sixteen times magnification on a 52 mm objective. Dividing gives a 3.3 mm exit pupil, which is comfortably matched to a daylight pupil and narrow for a dark-adapted one. That single figure places this instrument: it is built for distance in daylight rather than for faint objects at night.
BAK-4 prisms, which give a round exit pupil. A nitrogen filling with a sealed body, which prevents the internal fogging that ends an unsealed instrument on the first cold evening. Both are real claims.
Transmission of up to 99.8 %, with no waveband attached. Coating performance varies across the spectrum, and a single percentage without a band cannot be compared with anything. It is reported here because the maker publishes it.
This is the practical limit of the instrument. Braced against something solid, 16x shows detail that 10x does not; free-hand, the image moves enough to hide it. That is arithmetic rather than a criticism, and it applies to every monocular of this magnification.
German and French Amazon stores ran from 21 € to 32 € on the day of the survey.
American and British Amazon stores list it in local currency, which the euro range above sets aside.
Italian and Spanish Amazon stores stood above 1.6× the cheapest country. A gap that size normally means stock forwarded from abroad rather than a seller on the ground, so those figures are left out of the range above.
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 | 52 mm |
|---|---|
| Magnification | 16x, fixed by the design |
| Exit pupil | 3.3 mm — 52 divided by 16 |
| True field of view | Described, never quantified |
| Close focus | Not published by the maker. |
| Prism | BAK-4, per the maker |
| Coatings | SMC — the maker’s super multi-coating name · Up to 99.8 %, as the maker states it; no wavelength is given |
| Sealing | Nitrogen-filled, waterproof and anti-fogging per the maker |
| Weight | Not published by the maker. |
| Phone adapter fit | Not published by the maker. |
| Supplied accessories | Not published by the maker. |
| Amazon reference | B08FMM86JN (same reference on 6 Amazon marketplaces) |
| EAN | 0754469219403 |
Briefly. Every tremor is magnified sixteen times, so bracing against a post or a wall changes what is visible more than any specification here does. A tripod thread would help; the listing does not mention one.
It works, and two eyes see more than one. A monocular earns its place by being pocketable — it is the instrument that is present, not the one that shows most.
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
