Gadget / PC gear / Guide
【Oct 2026 Update】Best 27-Inch 4K Monitors in Japan: Three 2026 Models Compared, JAPANNEXT JN-IPS27G120U-W Is the Pick for 120Hz
Choose a 27-inch 4K monitor by refresh rate (screen redraws per second), color range and price. The JAPANNEXT JN-IPS27G120U-W (Feb 19, 2026) costs JPY 41,980 and runs at 120Hz. The JN-IPS2709U-W (Apr 9) costs JPY 34,980 at 60Hz.
Key points
- Release order: JN-IPS27G120U-W (Feb 19, 2026), JN-IPS2709U-W (Apr 9), LG 27U710B-B (rolling out from mid-May)
- All three are 27 inches at 4K (3840×2160), about 163ppi
- 120Hz vs 60Hz is 8.3 ms vs 16.7 ms per frame. The JPY 7,000 gap is about 20% of the JN-IPS2709U-W's price
Which 27-inch 4K monitor? Refresh rate and color range decide it
You can now buy a 27-inch 4K monitor from around JPY 30,000. The split is between how fast the screen redraws and how wide its colors are.
As an IT consultant (SE), I read the footnote before the headline number. When a maker marks a figure "typical" or "maximum", I copied it with that label to compare fairly.
Three models from 2026. The short answer: if you want games and work on one screen, the JN-IPS27G120U-W, which goes up to 120Hz.
Three yardsticks: redraw speed, color, price
| Yardstick | Winner | Why |
|---|---|---|
| Redraw speed | JAPANNEXT JN-IPS27G120U-W | 120Hz, 8.3 ms per frame (1000 ÷ 120). The two 60Hz models take 16.7 ms |
| Price | JAPANNEXT JN-IPS2709U-W | JPY 34,980, JPY 7,000 below the G120U (41,980 − 34,980) |
| Color and usability | LG UltraFine 27U710B-B | Covers 90% (typical) of DCI-P3. The stand adjusts height by 80mm |
All three are 27-inch 4K, so pixel density is the same, about 163ppi (√(3840² + 2160²) ÷ 27). You get four times the screen space of Full HD.
The three models: release dates and numbers
| Model | Release | Price | Refresh rate | Brightness / color |
|---|---|---|---|---|
| JAPANNEXT JN-IPS27G120U-W | Feb 19, 2026 | JPY 41,980 (direct, tax incl.) | Up to 120Hz | Up to 400cd/m², 100% sRGB |
| JAPANNEXT JN-IPS2709U-W | Apr 9, 2026 | JPY 34,980 (direct, tax incl.) | 60Hz | Up to 350cd/m², 100% sRGB |
| LG UltraFine 27U710B-B | Rolling out from mid-May 2026 | About JPY 44,000 (expected street price) | 60Hz | 90% DCI-P3 (typical), HDR10 |
Both JAPANNEXT models use a 27-inch IPS panel at 100% sRGB. The JPY 7,000 gap is about 20% of the 2709U's price (7,000 ÷ 34,980). For it you get 120Hz and 50cd/m² more brightness.
JAPANNEXT JN-IPS27G120U-W: 4K at 120Hz in white
Released Feb 19, 2026, this is a 27-inch 4K, 120Hz model. The IPS panel reaches 400cd/m² and 100% sRGB, with HDR400-equivalent performance claimed.
The white design suits a desk built around white gear. It is not just for games: 4K's detail helps when you tile text and spreadsheets.
Image: Rakuten Ichiba
JAPANNEXT 27-inch 4K 120Hz Gaming Monitor JN-IPS27G120U-W
Rakuten Ichiba is a Japanese marketplace. Overseas shipping depends on the shop.
Buying from outside Japan? Sign up free for Rakuten Global Express (Rakuten's official forwarding service) and check out with its Japan warehouse address → full guide
JAPANNEXT JN-IPS2709U-W: 4K IPS for JPY 34,980
Released Apr 9, 2026, this is a 60Hz 4K monitor. It reaches 350cd/m² and 100% sRGB, which also suits photo and video editing.
It supports a 100×100mm VESA mount, so a monitor arm fits. It has 2W×2 speakers and a two-year manufacturer warranty.
Image: Rakuten Ichiba
JAPANNEXT 27-inch 4K IPS Monitor JN-IPS2709U-W
Rakuten Ichiba is a Japanese marketplace. Overseas shipping depends on the shop.
Buying from outside Japan? Sign up free for Rakuten Global Express (Rakuten's official forwarding service) and check out with its Japan warehouse address → full guide
LG UltraFine 27U710B-B: pick it for color range and the stand
LG began rolling out this 27-inch 4K in mid-May 2026. The IPS panel covers 90% (typical) of DCI-P3 and supports HDR10.
The stand adjusts height by 80mm and tilts from −5 to 15 degrees. If you want USB Type-C power delivery as well, the 27U730B-B (about JPY 55,000) exists.
Image: Rakuten Ichiba
LG UltraFine 27-inch 4K Monitor 27U710B-B
Rakuten Ichiba is a Japanese marketplace. Overseas shipping depends on the shop.
Buying from outside Japan? Sign up free for Rakuten Global Express (Rakuten's official forwarding service) and check out with its Japan warehouse address → full guide
Strengths and things to note
Strengths
G120U: 4K at 120Hz and 400cd/m², the highest numbers of the three. 2709U: 4K IPS for JPY 34,980, and arm-ready. LG: 90% DCI-P3 and a height-adjustable stand for long work days.
Things to note
If you want fine height control with either JAPANNEXT, use the VESA mount for a monitor arm. The LG runs at 60Hz, and its expected street price is about JPY 44,000.
Which one should you buy?
Games and work on one screen: JN-IPS27G120U-W. Work and photos on a budget: JN-IPS2709U-W. Color range and height adjustment first: LG UltraFine 27U710B-B.
If you can't decide, take the JN-IPS27G120U-W. The reason: for JPY 41,980 you get 4K and 120Hz, only JPY 7,000 over the 2709U.
Image: Rakuten Ichiba
JAPANNEXT 27-inch 4K 120Hz Gaming Monitor JN-IPS27G120U-W
Rakuten Ichiba is a Japanese marketplace. Overseas shipping depends on the shop.
Buying from outside Japan? Sign up free for Rakuten Global Express (Rakuten's official forwarding service) and check out with its Japan warehouse address → full guide
To round out the desk, add the best gaming mice and the best wireless headphones. If you lack outlets, see the best Qi2 power banks.
Related reading: best AI voice recorders.
FAQ
What is the best 27-inch 4K monitor?
For 4K at up to 120Hz, the JAPANNEXT JN-IPS27G120U-W. On price, the JN-IPS2709U-W. For color range, the LG 27U710B-B.
When did the JN-IPS27G120U-W come out?
It went on sale Feb 19, 2026. The direct price is JPY 41,980 (tax included).
How different are 60Hz and 120Hz?
The screen redraws twice as often. One frame takes 16.7 ms at 60Hz and 8.3 ms at 120Hz. It helps with fast games and smooth scrolling.
About the writer and sources
Written by a desk-setup nerd who works as an IT consultant (SE). At work, I read the footnotes behind a spec before the headline number, and I built the tables here the same way.
Release dates and prices were re-checked on Oct 26 against the makers' announcements and Rakuten Ichiba listings. Sources are listed below.
