Our take
The Optoma PK320 is a pocket-size business projector built around battery use and local file playback. Optoma's launch material specifies native WVGA 854 × 480, an internal rechargeable battery and up to 1.5 hours of standard Eco use. It reads supported office and media files from internal memory or microSD and accepts external signals through Mini HDMI, VGA and AV connections. The Optoma-copyrighted specification sheet mirror gives 100 ANSI lumens in Bright mode with AC or the optional high-capacity battery and 25 ANSI lumens in Standard mode. This is a small, dark-room presentation device, not a replacement for a full-size bright projector.
A tiny travel projector for short presentations or casual local video when battery use and direct file playback matter more than size or brightness..
It is not for large bright rooms, fine spreadsheet text, Full HD movies or buyers who require long battery runtime without an optional pack. Confirm the old battery and exact cable package before travel use.
Pros & cons
What could work for you, and what to consider before buying.
What works in its favor
- Optoma verifies native WVGA 854 × 480 and a built-in rechargeable battery.
- Internal storage, microSD and a file player can support a presentation without bringing a separate computer for every file.
- Mini HDMI, VGA and AV offer several direct-source paths, with an ANSI figure qualified by operating mode.
What to weigh up
- The 854 × 480 panel has limited detail compared with current Full HD projectors.
- Brightness falls to 25 ANSI lumens in Standard mode; 100 ANSI Bright requires AC or an optional high-capacity battery according to the mirrored Optoma sheet.
- The standard battery rating is short and actual runtime on an older battery is unknown.
Specifications and exact model details
The key details
| Model covered | PK320 |
|---|---|
| Image format | Native WVGA 854 × 480 DLP |
| Rated light output | 100 ANSI lumens Bright on AC/optional pack; 25 ANSI Standard per Optoma datasheet |
| Placement | Built-in battery, up to 1.5 hours in Eco, 1.8:1 throw |
Performance figures are manufacturer claims. Source checked October 14, 2026. Regional models and included accessories can differ.
Full review: how the features affect your choice
What the features mean for you
A small WVGA image favors simple material
Optoma identifies the PK320 as a WVGA projector with native 854 × 480 pixels. This is adequate for a short presentation with large text or casual photos, but it does not provide the detail of a modern WXGA or Full HD panel. A higher-resolution source is scaled down to the projector's own grid. Keep image size modest and use large fonts, because tiny spreadsheet cells and detailed subtitles lose definition quickly. The product is unusually light and portable, so it may make sense for a short trip where a large display would be inconvenient. Treat the model's native pixel count separately from any source-resolution claims.
Brightness depends on the selected mode and power source
Optoma's official launch release calls the image high brightness but does not print a comparable ANSI figure. An Optoma-copyrighted exact-model specification sheet, mirrored by ProjectorCentral, lists 100 ANSI lumens in Bright mode using AC power or the optional high-capacity battery, and 25 ANSI lumens in Standard mode. Keep the condition attached to each number. The 100-lumen mode is still modest for a large screen or ambient light, while Standard trades brightness for battery use. Inspect the image in the mode you expect to use and do not treat a seller's old battery runtime as a guarantee. Its small image and dark-room use are more realistic than bright-room projection.
Its optics need a short-range plan
The specification packet gives a 1.8:1 throw ratio, which is conventional projection rather than ultra-short throw. Because it is likely to be placed near a table or wall, measure the lens-to-screen distance before deciding that it can fill a particular surface. The small size does not alter the geometry, and the source material does not document lens shift. Keep the unit square to the screen and adjust physical position instead of assuming a digital correction will preserve the full picture. Check which stand, tripod adapter or carry case is actually included; the brochure's historical package contents may not match an individual offer.
Local playback is different from streaming apps
Optoma says the PK320 can show supported Office, PDF, photo and video files from internal storage or a microSD card, and the built-in player can avoid carrying a laptop for compatible material. It also accepts external sources over Mini HDMI, VGA or AV. This is not the same as an integrated streaming-app operating system: the reviewed material does not establish current apps or protected-service playback. For subscription video, use a compatible external source and make sure its output and power needs work with the projector. The small speaker output is basic, so headphones or an external speaker may be useful where sound matters.
Battery age is the main used-unit question
Optoma's brochure states up to 1.5 hours in Eco mode for the standard battery and longer figures for a separately sold high-capacity pack. These are model ratings under stated conditions, not measurements of a battery that has aged for years. Ask for the included battery type, verify that it charges and holds a useful amount of power, and test a complete presentation at the intended brightness. Check Mini HDMI, VGA, USB/file transfer, microSD, focus, LED image uniformity and the adapter. The projector uses LED illumination rather than a conventional lamp, but that does not establish remaining light output or the health of the battery. This review makes no hands-on or listing-condition claim.
Compare for your needs
For more room brightness and WXGA detail, compare Optoma TW615-3D for a wired installation. For other battery-first options, compare Magnasonic PP60 while checking its own runtime and native detail.
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Before you buy
What is the PK320's native resolution?
Optoma's launch release identifies WVGA 854 × 480 native resolution.
How bright is it in ANSI lumens?
An Optoma-copyrighted datasheet mirror lists 100 ANSI lumens in Bright mode with AC or an optional high-capacity pack, and 25 ANSI lumens in Standard mode.
Does it have a battery?
Yes. Optoma documents an integrated rechargeable battery and up to 1.5 hours in Eco mode; the runtime of an older battery must be tested.
Where can I check the current price?
Use the Amazon link for current offers. Check the exact model, seller, product condition, delivery, and return terms. This page does not display a live price or confirm stock.
Sources and review basis
Sources & review basis
We use the linked product documentation for the features above. Our suitability notes and buying advice are editorial judgments based on those features, not measured performance results.
- Optoma PK320 official launch release ↗ — checked October 14, 2026.
- Optoma PK320 launch release ↗ — checked October 14, 2026.
- Optoma PK320 official brochure ↗ — checked October 14, 2026.
- Optoma-copyrighted PK320 specification sheet mirror ↗ — checked October 14, 2026.
The decision
Choose the PK320 for a small local-file presentation where battery operation matters and its modest WVGA image and condition-specific runtime are acceptable.
Is it the right fit?
Check the exact model and today’s offers on Amazon.