1 / 7SynoRiver 10-30x50 HD Monocular with Phone Holder and Tripod
The SynoRiver 10-30x50 HD Monocular is a manual-focus monocular listed with adjustable 10–30x magnification and a 50 mm objective lens. Its phone holder and tripod are intended to support hands-free viewing and smartphone capture, while listing inconsistencies mean some optical details should be confirmed before purchase.
At a glance
- The listing describes adjustable 10–30x magnification with a 50 mm objective lens for viewing distant subjects.
- A smartphone adapter and rotatable tripod are claimed as included, providing an option for supported viewing and phone capture.
- BAK4 prism and fully multi-coated optics are stated in the product description.
- The listed weight is 248 grams, with a rubber-armoured design described for outdoor handling.
Pros and cons
Pros
- The phone adapter and tripod offer a hands-free setup and a way to position a compatible smartphone for capture.
- The 10–30x zoom range gives more magnification flexibility than a fixed-power monocular, according to the listing.
- The stated 248-gram weight is a practical carry consideration for hiking and travel.
Technical specifications
21 specifications| Brand | SynoRiver |
|---|---|
| Model | 10-30x50 HD Monocular |
| Focus type | Manual Focus |
|---|---|
| Objective lens diameter | 50 Millimeters |
| Zoom ratio listed | 30 multiplier x |
| Coating | Multi-Coated |
| Prism type | BAK4 |
| Magnification | 10-30x |
| Field angle | 5.6° at 10x - 2.7° at 30x |
| Field of view | 130 m/1000 m |
| Near focal distance | 5 m |
| Exit pupil diameter | 5.6 mm |
| Exit pupil distance | 15.1 mm |
| Eyepiece diameter | 23 mm |
| Optics type | Roof Optics |
| Eyecup type | Rotating |
| Dimensions listed | 50D x 10W x 30H millimetres |
|---|---|
| Weight listed | 248 Grams |
| Phone compatibility | Smartphone |
| Material | Metal + High quality rubber |
|---|---|
| Waterproof system | Fill-nitrogen Waterproof, Anti-fogging |
What to know before buying
Listing details to confirm
Listing details are inconsistent or unconfirmed: dimensions are given as 50D x 10W x 30H millimetres while optical tube length and focal length are each listed as 10 millimetres, and field of view appears as both 130 Meters and 130 m/1000 m. The zoom-ratio entry says 30 multiplier x while product copy describes 10–30x. The title calls the build waterproof, dustproof and shockproof, while feature copy says water-, dust- and shock-resistant. Confirm the intended measurements and protection claims before buying.
Who is it for?
A good fit for
- Birdwatchers, hikers and travellers seeking a compact monocular with variable magnification.
- Buyers who want a listed phone adapter and tripod for smartphone capture or steadier viewing.
Less suited to
- Buyers who need independently confirmed optical measurements or clearly specified water and impact protection.
- Anyone seeking a binocular or a product with verified low-light performance.

Customer reviews on Amazon
- 5 stars
43% 43% - 4 stars
34% 34% - 3 stars
23% 23% - 2 stars
0% 0% - 1 star
0% 0%
The supplied aggregate ratings are mixed, with ratings spanning three to five stars. This small sample does not identify what buyers liked or disliked, so it cannot establish optical performance, durability or phone-adapter results. Use the stated magnification, weight and accessory claims as listing information, and verify the inconsistent details before choosing it for demanding use.
Frequently asked questions
What magnification does the listing claim?
The title and product description state adjustable 10–30x magnification. A separate zoom-ratio field says “30 multiplier x”, so confirm the intended zoom range with the selected listing.
Are a phone holder and tripod included?
The title and feature copy claim an adjustable phone holder and rotatable tripod are included, but no explicit package inventory was supplied. Check the selected listing's package details.
Is this monocular waterproof?
The listing uses varying protection descriptions, from waterproof to water-resistant, and also claims dust and shock protection. These claims are not consistent, so confirm the protection level before relying on it outdoors.

Alternative options

Monocular-Telescope 80x100 High Definition for Adults High Powered with Smartphone Adapter Telescope Hunting Wildlife Bird Watching Travel Camping Hiking-Green-1
$32.99

APEXEL 10 x 50 Zoom Monocular with Mil-Hash Reticle, Telescope with ED FMC Lenses, BAK4 for Adults, Waterproof Lightweight with Low Night Vision for Hiking Bird Watching Camping Wildlife Animals
$99.99

K&F Concept® 12X50 Monocular Telescope with Cleaning Cloth, FMC Lens & BAK4 Prism Telescopes for Adults, Sky Captain HD Monocular for Bird Watching Hunting Hiking Camping Travelling
$59.99

SVBONY SV28 Spotting Scope Telescope 25-75x70mm Zoom Spotting Scope with Bak4 Prism for Target Shooting Bird Watching with Tabletop Tripod and Phone Adapter
$99.99

EP Leben Monocular Telescope 80x100 High Power with Smartphone Adapter Tripod,Larger Vision Monoculars for Adults with BAK4 Prism & FMC Lens, Suitable for Bird Watching Hunting Hiking-Black
$68.89

Night Vision Monocular with 16X Digital Zoom, Tripod & 32GB SD Card | Digital night vision monocular with 16X zoom, 3000mAh battery, tripod and 32GB SD card for hunting and camping.
$69.00