Our take
Shortlist the Capsule II when the projector needs to travel and you value having Android TV, autofocus, and a battery in one compact model. Its specifications point to modest, controlled-light viewing rather than a large bright-room theater image.
Portable viewing when easy setup matters more than image size.
It is a poor fit if you need native Full HD or 4K detail, a large image with ambient light, a current app guarantee, or a long-term fixed installation.
Pros & cons
What could work for you, and what to consider before buying.
What works in its favor
- The built-in battery and 740 g body support moving the projector between locations.
- Anker documents Android TV 9.0, Chromecast, Wi-Fi, Bluetooth, HDMI, and USB.
- Autofocus and vertical keystone correction reduce some setup steps.
What to weigh up
- The native 1280 × 720 image is below Full HD.
- A 200 ANSI-lumen rating favors dark rooms and modest image sizes.
- The historical candidate bundle's wireless gamepad is not verified.
The key details
| Model covered | D2421 |
|---|---|
| Image format | 1280 × 720 DLP |
| Rated light output | 200 ANSI lumens |
| Placement | Portable battery; about 2.5 hours of video on Wi-Fi |
Performance figures are manufacturer claims. Source checked October 4, 2026. Regional models and included accessories can differ.
What the features mean for you
Where portability changes the buying decision
The Capsule II makes the most sense when the projector moves with the viewing plan: from a bedroom shelf to a friend's home, or from a cabinet to a temporary screen. Anker lists a body about the size of a small drink can and a weight around 740 grams, with an internal battery. That is a materially different ownership pattern from a fixed home-theater projector that needs a ceiling mount and a permanent cable path. Portability is the Capsule II's central strength, but it should not be mistaken for a promise that every wall, room, or audience will suit a small projector.
Resolution and brightness set a modest image target
The manufacturer identifies a 1280 × 720 DLP image and rates brightness at 200 ANSI lumens. Those facts explain why this model belongs in a portable, light-controlled use case. They do not support treating it as a Full HD projector just because a connected source can send a higher-resolution signal, and the 100-inch maximum size is a model claim rather than a guarantee of a bright picture at that size. For text-heavy slides, detailed sports graphics, or a room with daylight, a higher-resolution and higher-output model is a more sensible starting point.
A built-in platform reduces extra equipment
Anker documents Android TV 9.0, Chromecast, Wi-Fi, Bluetooth, HDMI, and USB. That can simplify a casual movie setup because a streaming stick is not automatically required. App catalogs and service certification can change with time, though, so confirm that the services you use still work on the specific unit and region. HDMI remains useful if you prefer a laptop or external streaming box. The platform is a convenience feature; it does not change the projector's 720p native image or make a low-brightness picture appropriate for a bright room.
Autofocus helps, but placement still matters
Anker lists autofocus and vertical keystone adjustment, which can make a quick temporary setup less fiddly. Focus correction and keystone are not substitutes for choosing a stable, reasonably square position. Digital geometry correction can reduce the part of the image used, and the picture may still be limited by the surface and ambient light. The integrated 8-watt speaker provides a compact audio option, while HDMI and Bluetooth leave room for other sources or sound equipment. A small tripod or steady shelf can be more useful than relying on the projector to correct a poor angle.
Treat runtime and bundle details as unit-specific
Anker gives about two and a half hours of video playback while using Wi-Fi, with local playback described separately. Battery age, brightness settings, network activity, and the condition of a used unit can change the experience, so that rating is not a guarantee for an individual projector. The frozen candidate title also mentions a wireless gamepad, but the saved evidence does not establish that the controller is included with the exact item. This review covers the D2421 projector model only. Before purchase, verify the model label, battery behavior, remote, charger, and any accessories with the seller.
Who should put it on a shortlist
Choose the Capsule II if being able to carry the projector and open a documented smart-TV interface matter more than resolution and bright-room performance. Consider the AAXA P6X if you prefer a WXGA image and different battery modes, accepting that its sources do not establish the same Android TV package. Choose a dedicated home-theater model if the projector will stay installed or if native image detail and a larger screen are priorities. These are feature-fit judgments from the cited model documentation, not hands-on picture or sound results.
What else to compare
The AAXA P6X is another battery-oriented option with a WXGA image and separate high-output and ECO runtime claims. The Hisense PX1-PRO and Epson LS500 are fixed ultra-short-throw home-cinema designs, so they solve a different room and portability problem.
Before you buy
Is the Capsule II native 1080p?
No. Anker lists a native 1280 × 720 DLP image; accepting a higher-resolution input does not make its native image Full HD.
Can it run a movie without an outlet?
Anker lists battery playback of about 2.5 hours for video while using Wi-Fi. The runtime of an older or used unit can differ.
Does the candidate include the wireless gamepad?
The saved evidence does not confirm the gamepad bundle for the exact historical candidate. Check the contents of the specific offer.
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.
- Anker Japan Capsule II product specifications ↗ — checked October 4, 2026.
- Anker Japan Capsule II model page and specifications ↗ — checked October 4, 2026.
- Nebula support comparison, D2421 column ↗ — checked October 4, 2026.
The decision
The Capsule II is the portable all-in-one choice in this batch. Its strongest documented match is battery-powered viewing with a built-in platform in a dark, modest-size setup; its lower native resolution and 200 ANSI lumens are clear limits.
Is it the right fit?
Check the exact model and today’s offers on Amazon.