Specifications & Features of Lenovo L28u‑35
Screen size is 28 inches diagonal. 
Native resolution is 4K UHD (3840 × 2160 pixels). 
Panel type is IPS (In‑Plane Switching) with a W‑LED backlight.
Typical refresh rate is 60 Hz. 
Response time varies by mode: ~4 ms in “Extreme” mode; ~6 ms in normal/typical mode; in “Off” mode slower (~14 ms). 
Brightness typical ~ 300 nits. 
Contrast ratio (static) ~ 1000:1. Dynamic contrast up to ~ 3,000,000:1 (depending on spec listings). 
Viewing angles are wide: ~178° horizontal, 178° vertical. 
Color gamut coverage is high: approx 99% sRGB and 90% DCI‑P3. Supports 10‑bit color (1.07 billion colors). 
HDR support: It is HDR10 compatible. Anti‑glare screen, includes features like Natural Low Blue Light, TÜV Rheinland / Eyesafe / Eye Comfort certifications to reduce eye strain. 
Connectivity: 2 × HDMI 2.0 ports, 1 × DisplayPort 1.4, and audio output (3.5 mm jack). 
Built‑in speakers: Yes, dual 2 W speakers.
Ergonomics / Stand: The stand supports tilt (‑5° to +22°), swivel (±360°), pivot (‑90° to +90°), and height adjustment (~150 mm). 
Design: 3‑side Near‑edgeless bezels; anti‑glare finish; color is “Raven Black”. 
Power: Typical consumption ~30 W, maximum ~50 W; standby <0.5 W; off mode <0.3 W. AC input 100‑240 V, 50‑60 Hz. 
Warranty 
Warranty period in India via authorized sellers is 3 years onsite warranty for this model.