Our take
The ASUS B1M is a compact WXGA LED projector for people who need a modest presentation setup that can run from its rechargeable battery pack. Its fixed 0.9:1 lens helps in a small room, but its 700-lumen rating lacks an ANSI method and should not be treated as a bright-room guarantee.
Portable presentations or occasional small-room viewing where battery operation, WXGA, and short placement distance matter more than ANSI-rated output.
It is not a large-screen daytime theater projector, native Full HD model, UST device, or projector with built-in licensed streaming apps.
Pros & cons
What could work for you, and what to consider before buying.
What works in its favor
- ASUS specifies native WXGA and distinguishes the B1M's 700-lumen rating from the B1MR variant.
- The manual identifies a rechargeable battery pack and a 0.9:1 fixed lens.
- HDMI, VGA, SD, and USB media playback offer several source paths.
What to weigh up
- The manufacturer does not label 700 lumens as ANSI.
- A fixed lens provides no optical zoom or lens shift.
- The manual does not give a battery runtime for the exact B1M configuration.
The key details
| Model covered | B1M |
|---|---|
| Image format | Native WXGA 1280 × 800 |
| Rated light output | 700 lumens; measurement basis not stated as ANSI |
| Placement | 0.9:1 fixed lens; 51-inch image at 1 m |
Performance figures are manufacturer claims. Source checked October 10, 2026. Regional models and included accessories can differ.
What the features mean for you
What does WXGA provide in a portable unit?
ASUS specifies native WXGA resolution of 1280 × 800 for the B1M. That wider 16:10 panel gives slide decks and computer documents more horizontal detail than an XGA projector, while remaining below Full HD. The official guide distinguishes B1M from B1MR: B1M is the 700-lumen version, while B1MR is listed at 900 lumens. Keep those variants separate when checking a used listing. Higher input formats do not increase the panel's pixel count, so choose the B1M for modest portable presentations rather than assuming it will reproduce fine theater detail.
Can the battery make it independent of an outlet?
The B1M/B1MR guide says the adapter charges the projector's battery pack and supplies power to the projector, supporting a battery-powered use path. ASUS's cited specifications do not establish a runtime for a particular used B1M, and aging can reduce an older pack's capacity. Ask whether the battery still charges and holds power, and test a complete session away from the outlet before relying on it for travel. Battery operation helps with setup flexibility, but the modest light rating still favors a controlled room and a moderate image size.
How close can it sit to the screen?
ASUS lists a fixed 0.9:1 throw ratio and a 51-inch image at one meter. That short throw can help when a table or cart has limited space, though it is not an ultra-short-throw design. Because there is no optical zoom, the projector must be positioned at the distance that produces the desired image size. The built-in stand changes angle, and digital keystone can correct a tilted image, but neither replaces lens shift. Measure the screen and mount surface first so a fixed lens does not force an inconvenient image size.
What source features are actually built in?
The model includes HDMI, VGA, composite AV, an SD card reader, USB media playback, and wireless projection through a Wi-Fi dongle. ASUS describes office documents, photos, and common video formats in its media center. That is useful for presentations without a laptop, but it is not the same as a built-in streaming app system. Verify which file formats the intended source uses and whether the dongle is included in the specific listing. A streaming stick could use HDMI, while wireless mirroring depends on the source device and the supported adapter.
Who should choose a different portable model?
The B1M suits a buyer who values an internal battery pack, short placement, and a sharper WXGA image than basic pocket models. Optoma ML800 has an explicit 800 ANSI-lumen rating and LED illumination but relies on AC power, while LG PV150G includes a battery and is much smaller but only WVGA with a low, non-ANSI rating. Compare those trade-offs against the room, carrying frequency, and source plan rather than relying on generic brightness wording. Check the battery, adapter, remote, and lens on the exact unit because original specifications cannot report its current condition.
What else to compare
Optoma ML800 has an explicit ANSI rating and LED source but no built-in battery; LG PV150G is battery powered with a lower WVGA image and light rating.
Before you buy
Is the B1M native WXGA?
Yes. ASUS lists native WXGA 1280 × 800 for B1M and separates it from B1MR.
Does the B1M's 700-lumen rating mean 700 ANSI lumens?
ASUS lists 700 lumens but does not label that B1M figure as ANSI.
Does its Wi-Fi feature mean it has streaming apps?
No. ASUS documents projection with a Wi-Fi dongle and local media playback, not integrated streaming services.
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 B1M product page and B1M/B1MR manufacturer specifications ↗ — checked October 10, 2026.
- ASUS B1M official product page ↗ — checked October 10, 2026.
- ASUS B1M/B1MR user guide and exact model specifications ↗ — checked October 10, 2026.
- ASUS B1M official support page ↗ — checked October 10, 2026.
The decision
Choose the B1M for short-distance WXGA presentations and battery flexibility, after verifying battery health, adapter, exact B1M variant, and the room's light level.
Is it the right fit?
Check the exact model and today’s offers on Amazon.