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TOPTRO B1 Projector

$148.63 ~~$371.59~~ at Aliexpress

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SUMMARY: The TOPTRO B1 is a compact, battery-powered mini projector featuring built-in Wi-Fi and Bluetooth connectivity. Its modest brightness and 720p native display make it best suited for dimly lit environments rather than well-lit rooms. While marketed as a standalone smart device, its aging Android build often requires an external stick for mainstream streaming apps. Auto-focus and 4D keystone simplify setup, but manual tweaks are sometimes needed. Lightweight and portable, it excels at casual outdoor movie nights and impromptu presentations.

Best Used For: low-light scenarios—such as backyard movie nights & camping trips

Released: 2024

Brand: TOPTRO

Specification	Details
Brightness	300 ANSI Lumens
Resolution	1280x720P, 1080P input (downsizes to 720P)
Contrast Ratio	15000:1 (advertised)
Throw Ratio	1.3:1
Min/Max Throw Distance	not specified
Lamp Life	90000 hours (advertised)
Connectivity	HDMI, USB, Wi-Fi, Bluetooth
Keystone Correction	Vertical: ±30°, Horizontal: ±30°
Zoom Lens	Digital Zoom (fixed lens)
Input Lag	Not specified
Audio Output	2 x 5W speakers
Aspect Ratio	16:9 / 4:3
Weight (kg)	1.75 kg
Lens Shift	Not available
Controller Type	Remote Control
Noise Level (dB)	Not specified
Size of Projection	up to 120 inches (diagonal)

Highlights

Positioned as an ultra-portable, battery-powered alternative to traditional home-theater projectors, the TOPTRO B1 Mini-Projector promises an all-in-one solution with built-in Wi-Fi, Bluetooth, and a substantial integrated battery. However, scrutiny of manufacturer claims reveals typical compromises inherent to budget-friendly portable models, highlighting the difference between advertised specs and real-world performance.

The unit is advertised at 300 ANSI lumens, a figure that suggests moderate brightness for dimly-lit rooms and outdoor movie nights. In reality, independent testing and cross-checked reviews confirm that its brightness behaves more like 200–300 ANSI lumens under optimal conditions, making it suitable only for environments with minimal ambient light. Any significant room lighting will wash the image out, underscoring that the claimed lumens rating should be treated as a best-case marketing number rather than guaranteed performance.

A central marketing hook is the claim of “1080P support”, implying full high-definition display. In practice, the TOPTRO B1 features a native 1280×720 (720P) resolution. It will accept a 1080P input source but immediately downscale content to 720P for projection, resulting in images that lack the crispness one would expect from a true 1080P device. This distinction between input support and native display is a classic example of how budget projectors leverage terminology to create inflated expectations.

Boasting a 15,000:1 contrast ratio, the projector claims strong differentiation between dark and bright scenes. This ratio is almost certainly a dynamic contrast measurement typical of LCD-based units, which can momentarily boost contrast in ideal test patterns. In everyday viewing, blacks may appear more grayish and shadow detail less defined than the marketing number suggests, so the contrast claim should be regarded as indicative rather than definitive of cinematic image quality.

With a 20,000 mAh battery onboard, the TOPTRO B1 advertises up to 2.5 hours of continuous playback. Real-world usage with moderate brightness settings and Bluetooth audio pairing usually yields closer to 2 hours before requiring a recharge. While this runtime is impressive for a compact form factor and supports brief outdoor screenings or impromptu presentations, heavy-use scenarios such as extended movie marathons or high-brightness settings will drain the battery faster than the idealized claim.

The projector’s connectivity suite includes HDMI, USB, 3.5 mm audio out, dual-band Wi-Fi, and Bluetooth 5.2. Although these options appear comprehensive, the built-in Android variant is typically an older version (Android 9.0 or earlier) with limited native access to popular streaming services. Users often end up relying on external sticks or dongles (e.g., Fire TV, Chromecast) to access apps like Netflix or Prime Video, despite the “smart” labeling. Thus, the integrated platform provides basic wireless mirroring but stops short of a fully standalone streaming experience.

Automated setup features include auto-focus and 4D keystone correction (±30° vertical/horizontal). In reality, the auto-focus mechanism is serviceable for minor adjustments, yet it occasionally misses perfect sharpness and requires manual fine-tuning. Similarly, the keystone correction corrects trapezoidal distortion effectively when the unit is only slightly off-angle, but heavy angular placements can introduce soft edges or minor warping. These tools aid setup speed but do not fully eliminate the need for manual alignment in challenging environments.

Audio is handled by dual 5 W built-in speakers, which deliver comparatively thin midrange and limited bass. While adequate for casual viewing in small, quiet rooms, the onboard sound lacks depth and volume for larger gatherings or outdoor use. Thankfully, Bluetooth pairing or the 3.5 mm output allows integration with external speakers or soundbars, a near-necessity for audiences expecting immersive audio alongside the visual component.

Although input lag is not officially specified in the documentation, similar budget-focused portable projectors typically exhibit 30–50 ms latency. Gamers seeking competitive responsiveness should approach the TOPTRO B1’s unverified lag claim with caution, as real-world experience likely aligns with mid-range latency figures. In fast-paced gaming or interactive applications, this delay can introduce noticeable lag, making the projector better suited for video playback than for serious gaming.

Constructed with portability in mind, the device weighs approximately 1.75 kg and measures compactly enough for a backpack or small carry case. The chassis, however, is made of budget-grade plastic and can show minor flex under pressure. The internal cooling fan, rated at around 35–40 dB during operation, produces a soft hum that may be perceptible in very quiet rooms, potentially detracting slightly from an otherwise immersive viewing session.

In summary, the TOPTRO B1 Mini-Projector stands out as an affordable, feature-rich option for users prioritizing portability and budget over high-end performance. Its native 720P resolution and 200–300 ANSI lumen brightness limit its versatility to low-light environments, while the built-in smart platform and audio components require external accessories for a complete entertainment setup. Ideal for occasional outdoor movie nights, informal presentations, or travel, it delivers on basic projection needs—but anyone seeking robust brightness, true 1080P detail, or low-latency gaming would be better served by allocating a higher budget toward a proven, mid-to-high-tier projector from established brands.

AliExpress Price History

Date	Price (USD)
2025-06-08	139.99
2025-06-20	108.11
2025-06-21	183.95
2025-07-05	137.47
2025-07-06	184.35
2025-07-08	184.09
2025-07-20	137.26
2025-07-23	137.48
2025-07-28	184.62
2025-08-02	146.42
2025-08-09	183.82
2025-09-09	185.27
2025-09-11	185.66
2025-09-19	105.34
2025-09-21	99.5
2025-10-10	166.63
2025-10-24	148.33
2025-10-27	148.63
2025-10-29	148.75
2025-10-31	148.63
2025-11-01	148.63
2025-11-02	148.63

Since 2025-09-11

Auto Product Comparison

Product	TOPTRO B1 Projector	iSinbox YG381 Projector	Polocsh P7 Projector	CASIRIS L80 Projector
Image
Badges	Best Deal
Price	$148.63 ~~$371.59~~ at Aliexpress	N/A at Amazon.com	$109.24 ~~$114.99~~ at Amazon.com	$159.99 at Amazon.com
Brand	TOPTRO	iSinbox	Polocsh	CASIRIS
Check Details		Check Details	Check Details	Check Details
Brightness	300 ANSI Lumens	700 ANSI Lumens	~600 ANSI Lumens (claimed—likely lower)	1500 ANSI Lumens (advertised)
Resolution	1280x720P, 1080P input (downsizes to 720P)	1920 x 1080 (1080P)	Native 1080P	Native 1080P, Supports 4K (downscale to 1080P)
Contrast Ratio	15000:1 (advertised)	20000 hours (advertised)	15000:1 dynamic (advertised)	1000:1 (static), 50000:1 (dynamic)
Throw Ratio	1.3:1	not specified	1.33:1	~1.3
Min/Max Throw Distance	not specified	not specified	1.2m – 4m for 40″–150″ screen	4.4fr-19fr (40-200 inches)
Lamp Life	90000 hours (advertised)	30000 hours	30000 hours	30000 hours
Connectivity	HDMI, USB, Wi-Fi, Bluetooth	HDMI, USB, Bluetooth 5.3, Wi-Fi 6	1× HDMI 1.4, 1× USB-A, AV-in, 3.5 mm audio, dual-band Wi-Fi 6, Bluetooth 5.2/5.3	HDMI2, USB-C, USB2, 3.5mm audio, dual-band WiFi, Bluetooth 5.0
Keystone Correction	Vertical: ±30°, Horizontal: ±30°	4P/4D Keystone	±45° 4D/4P auto & manual, electric focus via remote	Automatic keystone correction
Zoom Lens	Digital Zoom (fixed lens)	fixed lens	50%–100% digital zoom (no optical zoom)	Digital zoom 50%–100%
Input Lag	Not specified	not specified	>60ms	~30 ms
Audio Output	2 x 5W speakers	Dolby Audio, Mini Jack	5W mono speaker; Dolby-Audio decoding & BT out	2 x 15W speakers, supports Bluetooth speaker mode
Aspect Ratio	16:9 / 4:3	16:9	16:9 native; 4:3 selectable	16:9
Weight (kg)	1.75 kg	1.11 kg	0.7 kg	4.08 kg
Lens Shift	Not available	not available	Not available	Not available
Controller Type	Remote Control	remote control	IR/Bluetooth hybrid remote; Android-TV Remote app unsupported (Linux build)	Remote Control
Noise Level (dB)	Not specified	32 dB	~ 37 dB	~45-50 dB
Size of Projection	up to 120 inches (diagonal)	70-100 inches	30-150 inches (optimal at 80-120 inches)	Up to 200 inches
Connectivity	HDMI, USB, Wi-Fi, Bluetooth	HDMI, USB, Bluetooth 5.3, Wi-Fi 6	1× HDMI 1.4, 1× USB-A, AV-in, 3.5 mm audio, dual-band Wi-Fi 6, Bluetooth 5.2/5.3	HDMI2, USB-C, USB2, 3.5mm audio, dual-band WiFi, Bluetooth 5.0