Our take
The Optoma Pico PK100 is a pocket projector built around a rechargeable battery, external AV input and manual focus. Its exact manual supplies useful setup information, including two switch-selected brightness modes and a distance chart, but the reviewed primary material does not provide a native-resolution, ANSI-lumen or runtime figure. It is therefore a specialized small-image portable option, not a model to compare on claims that its sources do not establish.
A pocket-sized portable projection experiment where a small image, external AV source and verified battery condition are acceptable..
It is not a substantiated bright-room, large-screen, native-HD or long-runtime choice from the saved model evidence.
Pros & cons
What could work for you, and what to consider before buying.
What works in its favor
- The exact PK100 manual explains battery installation and charging rather than relying on a generic portable-product title.
- A distance chart documents an image up to 66 inches at 2.636 metres, with a manual focus dial.
- The manual shows an AV input path and two brightness-mode positions on the physical switch.
What to weigh up
- The readable exact-model manual does not establish native pixels, ANSI brightness or battery runtime.
- The battery cannot be charged while the projector is operating, and a full charge can take up to four hours.
- Apple-device adapters are listed as optional, so an older source chain may require separate compatible cabling.
The key details
| Model covered | PK100 |
|---|---|
| Image format | Manual documents rechargeable battery and separate charging |
| Rated light output | Manual focus and two switch-selected brightness modes |
| Placement | AV source input; chart reaches 66 inches at 2.636 metres |
Performance figures are manufacturer claims. Source checked October 11, 2026. Regional models and included accessories can differ.
What the features mean for you
What makes this a portable projector?
The Optoma manual names the Pico Pocket PK100 and shows a battery cover, a rechargeable battery, a charger connection and a small physical switch with Bright and Standard positions. The source also labels a USB power inlet and manual focus dial. This makes cordless use a documented design feature, although the reviewed manual does not give a runtime value. Before relying on an older example away from an outlet, ask the seller to demonstrate a full charge and operation on the battery rather than assuming that a charge indicator means the battery still holds useful capacity.
What image detail and brightness can be compared?
The exact manual material available for this review does not establish a native resolution or an ANSI-lumen figure. Those values therefore remain unknown in the matching profile. The manual's two brightness-mode labels are operating positions, not measured output ratings. That gap matters more than a generalized pocket-projector claim if you need readable small text, a sizable screen or room-light performance. Ask for an exact model sheet or a demonstration at the intended size; do not infer detail or brightness from the product name or from another Optoma Pico model.
How large an image can its chart place?
The manual's projection chart lists a maximum diagonal of 66 inches at 2.636 metres, with smaller sizes at shorter distances. It also instructs the user to adjust focus by turning the focus dial. This is useful for deciding whether the PK100 can throw a small picture in the available space, but it is not a brightness guarantee at that size. Measure from the projector to the screen and test focus across the image. Do not assume a larger image will remain usable in ambient light when the model's ANSI output is not established.
What source connection does it use?
The manual shows an AV input source, with optional adapters for certain Apple products. It also identifies a USB power inlet; the source guide does not present that port as a video-input or storage-playback connection. Check the output type of the device you plan to use and obtain the correct cable before a meeting or trip. This is a legacy external-source path, not built-in streaming. A modern HDMI-only device may need a converter, and the manual does not establish how a third-party adapter will handle picture and sound together.
What should be checked about power and accessories?
Optoma's manual says charging can take up to four hours and that the projector will not charge while it is operating. It documents a removable battery but does not state a runtime in the reviewed material. Inspect the battery, charger, power inlet, focus dial and mode switch on the actual projector. The manual includes setup diagrams and optional adapters, but a current seller's bundle can differ. Confirm the exact contents rather than assuming a tripod fitting, cable or working battery is included with a historical listing match.
Who should consider the PK100?
Consider the PK100 only when pocket portability and its documented AV input are more important than verified native detail or a comparable brightness rating. It may suit a brief personal projection where the user can supply a compatible AV source and accept the manual's small-screen distance chart. It is a poor choice for a buyer who must meet a known ANSI threshold, display fine text at scale or run for a specified number of hours without power. Use the exact-model search, verify the battery and adapters, and test the image before depending on it.
What else to compare
Compare AAXA CP3 for seasonal effects and a documented full-size HDMI input, or a current portable model with verified native resolution and ANSI output.
Before you buy
What is the PK100's native resolution?
The exact-model material reviewed here does not establish a native pixel count, so the matching value remains unknown.
How long does its battery last?
The manual explains charging but does not provide a runtime figure for the PK100.
Can its USB inlet play video?
The manual labels USB as a power inlet and separately shows an AV input source; it does not document USB media playback.
What image size does the manual chart show?
The chart reaches 66 inches diagonally at 2.636 metres; verify focus and the actual image on the unit.
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 & review basis
We use the following manufacturer documentation for the product features above. Our suitability notes and buying advice are editorial judgments based on those features, not measured performance results.
- Optoma Pico Pocket PK100 user manual, readable manual mirror ↗ — checked October 11, 2026.
- Optoma Pico Pocket PK100 user manual, mirrored copy ↗ — checked October 11, 2026.
- Optoma Pico Pocket launch press release; line-family context only ↗ — checked October 11, 2026.
The decision
Choose the PK100 only for a small-image portable use where its battery, AV cable and actual picture have been checked.
Is it the right fit?
Check the exact model and today’s offers on Amazon.