UPERFECT GR19BU
- Resolution:
- 3840x2160 (4K UHD)
- Refresh Rate:
- 144Hz
- Panel Technology:
- IPS
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Manufacturer: UPERFECT Last updated: 2026-09-23
Where to buy
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UPERFECT GR19BU Review
UPERFECT GR19BU 19-inch 4K UHD QLED portable monitor, 144Hz, 9ms, 107.8% DCI-P3, USB-C, aluminum build
A 19-inch portable 4K QLED display aimed at gamers and creators who want desktop-class resolution and refresh rate on the go, driven over a single USB-C cable.
Overview
The GR19BU (marketed as UColor Apex) is UPERFECT's largest 4K portable monitor, pairing a 19-inch QLED panel with a 144Hz refresh rate rarely seen at this resolution in a portable form factor. It includes a folding aluminum stand and FreeSync support.
Our verdict
Reviewed by Burooj Alam. Rated by us, not by users.
Best for
- Portable 4K gaming
- Creators needing color-accurate travel displays
- Second-screen desktop expansion
Not for
- Users needing a battery-powered monitor
Specifications
What these specs meanIdentity
| Brand | UPERFECT |
|---|---|
| Model Number | GR19BU |
Panel
| Panel Type | QLED |
|---|---|
| Screen Size | 19 in |
| Resolution | 3840 x 2160 (4K UHD) |
| Aspect Ratio | 16:9 |
Performance
| Refresh Rate | 144 Hz |
|---|---|
| Response Time | 9 ms |
Features
| HDR Support | Yes |
|---|---|
| Curved | No |
Screen geometry
| Native Resolution | 3840x2160 |
|---|
Motion
| Max Refresh Rate | 144 Hz |
|---|---|
| Response Time GtG | 9 ms |
Adaptive sync
| VRR Standard | FreeSync |
|---|
HDR and brightness
| SDR Brightness | 400 nits |
|---|---|
| Native Contrast Ratio | 1200 :1 |
Color
| DCI-P3 Coverage | 107.8 % |
|---|
Connectivity
| USB-C DP Alt Mode | Yes |
|---|
Stand, mounting and form
| VESA Mount Pattern | 75x75 |
|---|---|
| Built-in Speakers | Yes |
| Battery Powered | No |