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🚀 Triple your screen, triple your impact — work and play without limits!
The KEEPTIME Triple Display Extender is a 13.3-inch portable 4K UHD IPS monitor featuring 400 nits brightness, 1500:1 contrast ratio, and 178° wide viewing angles. It supports USB-C and Mini HDMI connectivity for plug-and-play compatibility across laptops, smartphones, and gaming consoles. Designed for professionals on the go, it offers flicker-free, low blue light technology and a slim, lightweight form factor with a removable magnetic stand, enhancing productivity and visual comfort wherever you work or game.


| ASIN | B0CJLGFCPZ |
| Adaptive Sync | FreeSync |
| Aspect Ratio | 16:9 |
| Aspect ratio | 16:9 |
| Brand | KEEPTIME |
| Brand Name | KEEPTIME |
| Colour | Matte Black |
| Compatible Devices | Laptop |
| Contrast Ratio | 1500:1 |
| Customer Reviews | 4.2 out of 5 stars 26 Reviews |
| Display Technology | LCD |
| Display Type | LCD |
| Hardware Connectivity | HDMI, USB |
| Has Color Screen | Yes |
| Image Brightness | 400 nits |
| Image contrast ratio | 1500:1 |
| Is Electric | No |
| Item Dimensions D x W x H | 30D x 19.1W x 1H centimetres |
| Item Weight | 1.48 Kilograms |
| Manufacturer | KEEPTIME |
| Maximum Display Resolution | 1920 x 1080 |
| Model Name | portable monitor |
| Model Number | M133 |
| Mounting Type | Wall Mount |
| Native Resolution | 3840x2160 |
| Network Connectivity Technology | USB |
| Picture Quality Enhancement Technology | HDR files |
| Pixel Pitch | 0.154 |
| Product Features | Portable |
| Refresh Rate | 60 Hz |
| Resolution | 4K UHD 2160p |
| Screen Finish Type | Glossy |
| Screen Size | 13.3 Inches |
| Screen size | 13.3 Inches |
| Screen surface description | Glossy |
| Shape | Rectangular |
| Specific Uses For Product | Business |
| Total HDMI Port | 1 |
| Total Thunderbolt Ports | 1 |
| Total USB 3.0 Ports | 2 |
| Total USB Ports | 2 |
| Total Video Out Ports | 1 |
| Unit Count | 1.0 count |
| Viewing Angle | 178 Degrees |
M**L
Great little thing
This little thing packs a lot of punch. The clarity is excellent. I got this for font editing because of the high DPI (331) and it delivers in that aspect very well. I also got it for photo editing and the high DPI is great for double checking the edit. If you set the scaling to 200% it's actually usable as a main screen for productivity apps like Photoshop. It's great for watching videos. At least in terms of picture quality- the speakers are not impressive but it has them if you need them. But the colors are amazing and I didn't even need to adjust the color profile, they were pretty accurate on factory settings. It works okay for gaming. There is some smearing/ghosting. The worst scenarios are when the scene has a lot of washed out grays, like in Dark Souls 3. You need to turn off motion blur in these games because the ghosting is already like motion blur. It was still playable but it was right on the threshold of what I would consider acceptable. I would definitely not play the whole game on this monitor. But in more bright games the smearing is hardly noticeable and the 13" screen is actually a great size for certain games like celeste and hollow knight. The form factor is nice. The magnets are strong enough that it doesn't slip. Construction feels solid. The kickstand keeps its angle and is sturdy. Overall I'm really impressed with this display for its price.
E**N
frankly astonishing
I’m amazed by the quality of this display. Slightly higher than Apple “retina” grade. The color is great. There are a few gripes in these reviews saying that it looks weird on the Mac. The default resolution, for whatever reason, is the wrong one. To fix this… - go to System Settings - pick Displays - check on "Show all resolutions" - pick 1920 x 1200 You'll also see 3840 x 2400; that will tell the system to use pre-retina (2000-2012 era) UI, which will be half the correct size in both dimensions. Trust me, 1920 x 1200 is the sweet spot. There's an app called EasyRes which will make this a little easier. That said, this is much higher resolution than an Apple Macbook Pro 14" display (3024x1964, this is 3840x2400). Everything will be retina smooth, but on the small side. I like to use the external for creative work, and use the main display for reading and coding. What else… it’s very, very glossy. Sometimes I have to plug it in a couple times before the display realizes it's connected. Those are the sort of compromises you put up with for a bargain like this.
R**V
I love this 4K monitor
It is a perfect companion to my MacBook Air. The picture is crisp - 4K (or lower if you want). Power and video through the USB C cable connected to the computer (remember - the quality of the cable needs to be able to carry power and video - not all USB C cables qualify). The USB C to C cable provided in the box works just fine. I love how thin monitor is, and that it comes with a cover. It slips into my slim computer bag right next to my MacBook Air . So far - nothing to complain about!!
K**.
HDCP failures, bad ground for audio out, and abysmal HDR functionality
Fails HDCP 2.2 handshake now after just 9 months of light use, making this monitor completely useless with streaming devices. I was concerned the reliability would be a problem with a no-name branded monitor and was unfortunately correct. Additionally the 3.5mm audio out has bad ground noise, another unfortunate problem with the lower quality of this panel. Also don't trust the HDR feature stated for this monitor, the tone mapping is abysmal and you'll immediately turn it off once you see how poorly it functions and how dull it makes the picture.
D**N
Bright and crisp and super light.
I wasn’t expecting much from a 4K monitor at this pricepoint but it works and looks great. Pleasantly surprised and totally satisfied with the purchase. It is much thinner and lighter than my colleagues that have slightly older monitors that now look like dinosaurs. One thing to note: when it turns on, the screen brightness is all the way down. Don’t be disappointed! Just turn it up and it’s bright and beautiful.
Trustpilot
3 weeks ago
3 weeks ago