color：black/white
size（inch）：21.5' /23.8"/27
LCD:IPS/1920*1080(FHD)/16:9/60-75H/H:178 V: 178/3000:1 (Typ.) /250cd/m²
adapter：input:100-240V~50/60Hz 1.6A output:19V-7.5A
trumpet：built-in
wifi：RTL8821CE，Bluetooth， (2.4G/5G) ，IEEE 802.11ac
radiator：Three copper pipes for heat dissipation
product size：21.5": 490*193*293mm 23.8": 514*193*322mm 27": 615*193*368mm
package size：21.5": 550*175*435mm 23.8": 610*175*470mm 27": 690*175*525mm
Graphics card ：integrated graphics card
weight：21.5": 5.4kg/23.8": 6.3kg/27": 7.2kg
system：WIN 7/WIN 10/WIN 11