Specifications & Features of Lenovo L27h‑4A
The display is 27‑inch diagonal with a QHD (2560 × 1440) resolution.
It uses an IPS‑type panel with WLED backlighting, and the screen surface has anti‑glare treatment. 
Refresh rate goes up to 100 Hz. 
Response time in MPRT mode (at 100 Hz) is about 1 ms. Other modes: Extreme ~4 ms; Normal ~6 ms; Off mode ~14 ms. 
Brightness typical ~350 nits. 
Static contrast ratio is ~1500:1; dynamic contrast very high (often listed around 3,000,000:1) in some product‑descriptions. 
Colour gamut is about 99% sRGB and ~90% DCI‑P3. 
Viewing angles are wide: ~178° horizontally and vertically. 
Connectivity includes: 2 HDMI 2.1 ports; 1 DisplayPort 1.4; 1 USB‑C port (with DisplayPort Alt Mode, and supporting ~75 W Power Delivery in some listings) plus multiple USB‑A downstream ports. 
Built‑in speakers: two 3W channels, often certified by Waves MaxxAudio. 
Ergonomics: The stand allows tilt (‑5° to +22°), swivel, pivot, and height adjustment up to ~150 mm. 
VESA mount support: 100 × 100 mm. 
Certifications / Eye comfort features: Eyesafe® Display 2.0; TÜV Low Blue Light (hardware solution); TÜV Rheinland Eye Comfort; natural low blue light technology; ENERGY STAR® and EPEAT Gold in some regions. 
Warranty 
The base warranty provided by Lenovo for this monitor is 3 years in many markets.