Koolertron 9 in LCD Microscope
#11 in DigitalFull review
A battery-powered 9 in scope for coins and PCB inspection on a budget. The listing leaves out its video resolution and warranty.
Amazon $90.14$90.14
The Koolertron 9 in LCD Microscope is the better microscope overall, rated 3.0 to 2.9. The Koolertron 9 in LCD Microscope leads on price. The TOMLOV DM9 Max wins on viewing. The Koolertron 9 in LCD Microscope costs $39.85 less ($90.14 vs $129.99).
Prices were last checked November 9, 2026. Product prices and availability are accurate as of that date and are subject to change; the price and availability shown on Amazon or the retailer's site at the time of purchase apply. As an Amazon Associate we earn from qualifying purchases.
TOMLOV DM9 Max
#12 in DigitalFull review
A bigger-screen DM9 with a taller stand that suits coin collectors and occasional soldering. Choose a 4K model if you plan to record or use a large monitor.
Amazon $129.99$129.99
Which should you buy?
- Choose the Koolertron 9 in LCD Microscope for price ($90.14 vs $129.99).
- Choose the TOMLOV DM9 Max for viewing (10.1 in screen, PC vs 9 in screen, PC).
Scores side by side
Each factor is scored 0-100 against the same fixed reference points for every digital microscope; a clear win is highlighted. How we rank explains each one.
| Factor weight | Koolertron 9 in LCD Microscope | TOMLOV DM9 Max |
|---|---|---|
| Overall rating | 3.0/5 | 2.9/5 |
| Price 10% | 93 $90.14 | 74 $129.99 |
| Optics 25% | 50 video resolution not published (neutral score used) | 25 1,080p live/video resolution |
| Working distance 15% | 50 working distance not published (neutral score used) | 50 working distance not published (neutral score used) |
| Viewing 20% | 59 9 in screen, PC | 70 10.1 in screen, PC |
| Features 20% | 15 built-in battery | 15 remote |
| Warranty 10% | 0 warranty not published, scored as none | 25 2-year warranty |
Specifications
| Koolertron 9 in LCD Microscope | TOMLOV DM9 Max | |
|---|---|---|
| Optics and imaging | ||
| Video resolution | - | 1080p |
| Photo resolution (stated) | - | 20 MP |
| Magnification claim (not scored) | - | 5-1500x |
| Autofocus | No | No |
| Viewing and output | ||
| Screen | 9 in | 10.1 in |
| Outputs | PC | PC |
| Measurement software | No | No |
| Remote | No | Yes |
| Stand and lighting | ||
| Stand | Pillar | Pillar |
| Stand height | 10 in | 12.6 in |
| Lights | Top | Top |
| Built-in battery | Yes | No |
| Build | ||
| Warranty | - | 2 years |