qled display: quantum dot technology delivers our finest picture ever. with color volume 100%, quantum dot takes light and turns it into breathtaking color that stays true at any level of brightness. it gives billion shades of colors experience for viewers.quantum processor 4k: showing the exceptional gaming performance with quick response action, brilliance of 4k uhd with the brightness. it provides unprecedented wide view of the action with the aspect ratio of 16:9.pre-installed applications: we provide pre-installed applications for our customers which are youtube, netflix, amazon prime video, google assistant, google play store, google play movies &tv, google play games, custom apps, smart player, chromecast, fastcast, e-sticker, e-show and local popular apps.air purifier: 5-layer filter multi-stage purification for clean air with true hepa removes up to 99% of particlesm air quality indicator with an air quality sensor to conduct diagnosis, smart night mode activated when surrounding turns dark. ensure whole-night sleep with smart night mode activated when surrounding turns dark filter, the air with a noise level of 55 db for a restful and soothing indoor environment, helping you sleep deeply.