UPERFECT BE133BU
- Resolution:
- 3840x2160 (4K)
- Refresh Rate:
- 60Hz
- Panel Technology:
- WOLED
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Manufacturer: UPERFECT Last updated: 2026-09-23
Where to buy
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UPERFECT BE133BU Review
UPERFECT BE133BU 13.3-inch 4K OLED ultra-slim portable monitor, 109% DCI-P3, MacBook-matched aluminum design
A pocketable 13.3-inch 4K OLED display built to sit alongside a MacBook, with an ultra-slim aluminum shell and wide DCI-P3 coverage for color-critical work on the move.
Overview
The BE133BU (UColor O Lite) is UPERFECT's thinnest OLED portable monitor, targeting MacBook and business laptop users who want a matching second 4K screen without added bulk. It ships with a smart case that doubles as a stand.
Our verdict
Reviewed by Burooj Alam. Rated by us, not by users.
Best for
- MacBook users wanting a matching second screen
- Color-critical mobile editing
Not for
- High refresh rate gaming
Specifications
What these specs meanIdentity
| Brand | UPERFECT |
|---|---|
| Model Number | BE133BU |
Panel
| Panel Type | OLED |
|---|---|
| Screen Size | 13.3 in |
| Resolution | 3840 x 2160 (4K) |
| Aspect Ratio | 16:9 |
Performance
| Refresh Rate | 60 Hz |
|---|---|
| Response Time | 1 ms |
Features
| Curved | No |
|---|
Screen geometry
| Native Resolution | 3840x2160 |
|---|
Motion
| Max Refresh Rate | 60 Hz |
|---|---|
| Response Time GtG | 1 ms |
HDR and brightness
| SDR Brightness | 390 nits |
|---|---|
| Native Contrast Ratio | 100000 :1 |
Color
| DCI-P3 Coverage | 109.1 % |
|---|
Connectivity
| USB-C DP Alt Mode | Yes |
|---|
Stand, mounting and form
| VESA Mount Pattern | 75x75 |
|---|---|
| Built-in Speakers | Yes |
| Battery Powered | No |