Our take
ZenBeam S2 is a genuinely portable design on paper because ASUS documents an internal 6000 mAh battery and up to 3.5 hours of operation. Its 1280 × 720 DLP image and 500-lumen figure set a modest target for controlled-light viewing; ASUS does not label that figure ANSI. Autofocus, wireless projection, and USB-C/HDMI inputs make setup more flexible, but screen mirroring is not the same as a built-in catalog of streaming apps.
Portable small-image viewing when battery operation and quick source connections matter more than standardized brightness or Full HD detail.
It is not a strong fit for bright rooms, large audiences, native Full HD or 4K detail, or a buyer who requires a verified ANSI threshold or guaranteed long runtime from an older battery.
Pros & cons
What could work for you, and what to consider before buying.
What works in its favor
- ASUS specifies native 1280 × 720 DLP resolution and autofocus.
- The 6000 mAh internal battery is rated for up to 3.5 hours of use.
- HDMI, USB-C, USB-A, and wireless projection provide several source options.
What to weigh up
- The 500-lumen figure has no stated ANSI measurement basis.
- Native 720p limits fine detail compared with Full HD projectors.
- Battery health and current wireless app compatibility depend on the individual unit and source.
The key details
| Model covered | ZenBeam S2 |
|---|---|
| Image format | 1280 × 720 DLP |
| Rated light output | 500 lumens; ANSI basis not specified |
| Placement | Internal 6000 mAh battery; up to 3.5 hours |
Performance figures are manufacturer claims. Source checked October 4, 2026. Regional models and included accessories can differ.
What the features mean for you
Portability is supported by an internal battery
ASUS identifies the ZenBeam S2 as a portable projector and lists a 6000 mAh battery with up to 3.5 hours of use. That makes it suited to a temporary setup where there may not be an outlet beside the screen, or to moving between a bedroom, meeting space, and travel bag. The rating is a manufacturer maximum and does not guarantee runtime for an older battery, every brightness mode, or every wireless task. Check charge retention on the actual device and plan a charging break or USB power source for longer sessions rather than assume the published figure will be available indefinitely.
A 720p native image suits casual, modest-size viewing
The model uses DLP and has native 1280 × 720 resolution. That provides more detail than a basic WVGA pocket projector, yet remains below Full HD. For a compact device used on a bedroom wall or for a short shared video, that distinction may be acceptable; small captions, dense slides, and fine interface details will be less forgiving. A source that outputs 1080p does not change the native pixel count. ASUS's 500-lumen statement also lacks an ANSI measurement basis, so compare it as the maker's figure rather than convert it to a different standard.
Wireless projection is useful but is not an app store
ASUS lists wireless projection and an autofocus system alongside USB-C and HDMI. A phone or computer can therefore be part of the source plan without relying solely on a full-sized laptop connection. Wireless display functions do not establish Netflix, Prime Video, or another certified streaming app running on the projector itself. Protected video may require an external HDMI source, and wireless compatibility can depend on the phone, operating system, network, and content service. Buyers who value a self-contained app interface should verify that feature separately rather than equate screen sharing with an integrated streaming platform.
Measure the throw even on a small projector
ASUS's specifications give the S2 a 1.12:1 throw ratio and fixed optical zoom. That is conventional placement, not an ultra-short-throw lens. The small chassis still needs a stable position at the distance required for the desired image width. Autofocus can help after moving the projector, but digital keystone correction and focus do not replace measuring the lens-to-screen distance. Align the unit close to square with the surface and check the whole image. Optical lens shift is not established in the saved specifications, so do not plan a mount that depends on that adjustment.
Connections and battery condition shape the actual package
HDMI and USB-C/USB-A broaden the S2's source possibilities, while ASUS lists a two-watt speaker and a wireless projection feature. These details can simplify a portable setup, but the historical candidate row does not verify the exact seller bundle, condition, charger, or cable set. If considering a used unit, ask to see the model plate, battery charging and playback, focus, wireless connection, HDMI input, USB-C behavior, fan, speaker, and remote. The listed maximum runtime is not a guarantee about a particular battery, and this source-based review does not claim hands-on testing or current availability.
What else to compare
For a Philips-branded pocket model with a documented battery and native 720p, compare PPX4835. For a home theater with an ANSI rating and no battery requirement, compare BenQ TH585P.
Before you buy
Does ASUS rate the S2 at 500 ANSI lumens?
ASUS lists 500 lumens, but the saved technical page does not identify an ANSI measurement method.
Will it work without a wall outlet?
ASUS specifies an internal 6000 mAh battery and up to 3.5 hours; actual runtime depends on battery condition and use.
Does wireless projection mean Netflix is built in?
No. ASUS documents wireless projection, not an integrated streaming-app platform. Verify protected content with your source device.
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.
- ASUS ZenBeam S2 official technical specifications ↗ — checked October 4, 2026.
- ASUS ZenBeam S2 official technical specifications ↗ — checked October 4, 2026.
The decision
ZenBeam S2 earns consideration for battery-powered portability and flexible connections, with non-ANSI output and 720p detail as the main limits.
Is it the right fit?
Check the exact model and today’s offers on Amazon.