Choosing between projectors & screens often means choosing between a self-contained movie-night package and a more connected entertainment setup. The Alvar RV400A emphasizes an included 100-inch screen and built-in audio, while the INFGO emphasizes WiFi and built-in streaming services. The useful shortcut is to decide whether included hardware or integrated entertainment controls matter more.
Quick verdict
Pick the Alvar RV400A when the built-in screen and built-in speakers are central to your setup. Choose the INFGO 4K Projector when WiFi and built-in Netflix, Prime Video, and YouTube are more important. The listed prices differ by $8.10, so the decision is mainly about how you plan to use the projector rather than a large price gap.
At-a-glance comparison
| Projector | Listed price | Listed native resolution |
|---|---|---|
| Alvar RV400A | USD 21.89 | 1280 x 720 |
| INFGO 4K Projector | USD 29.99 | 1920 x 1080 |
Where each product wins
- Alvar RV400A wins for a movable setup. Portable design and a universal remote are listed, making those features central if the projector will serve more than one viewing location.
- INFGO wins for positioning controls. Auto focus, 6D keystone correction, and a 360° stand are specified, giving it a clear use case when adjustment tools matter.
Product notes
Alvar RV400A 1080P HD Bluetooth Projector

Alvar RV400A makes sense for a moveable setup: it is portable and includes a universal remote. Backyard viewing, parties, and movie nights while traveling are also named uses, giving the projector a clear fit for flexible entertainment. The limitation is the native image specification: 1280 x 720 is listed, so that is the figure to weigh when native resolution matters. Choose Alvar when portability and an included remote are more useful to you than a native 1920 x 1080 specification. Its built-in screen and speakers also support the self-contained setup described in the quick verdict, while the 100-inch screen phrase in the title clarifies the intended presentation size.
INFGO 4K Projector with WiFi and Bluetooth

The INFGO 4K Projector fits shoppers who prioritize positioning controls: auto focus, 6D keystone correction, and a 360° stand are all specified. Those are concrete reasons to choose it when setup adjustment matters. The limitation is the 4K expectation: 4K video support is specified to display at 1080P, while native resolution is 1920 x 1080. Read the 4K wording as support for that content format, not as a native 4K specification. Choose INFGO for its adjustment controls and connected setup, with the understanding that its native output is listed as 1920 x 1080.
Final choice by use case
- For backyard or travel movie nights: choose Alvar RV400A. Backyard viewing, parties, and movie nights while traveling are named uses, so it has the clearest fit for that scenario.
- For built-in streaming services: choose INFGO. Netflix, Prime Video, and YouTube are named alongside WiFi, matching a setup centered on those services.
- For several physical input types: choose Alvar. HDMI Standard, USB, and VGA/SVGA D-Sub are listed, giving this projector a concrete reason to suit shoppers who need those connection options.
If none of those use cases decides it, let the $8.10 difference and your preferred setup style make the final call.