Yes, you can connect speakers to the monitor as it has a headphone output (3.5 mm audio out). You can use this connection to connect external speakers or headphones and output the sound. The volume can also be adjusted via the monitor menu.

Yes, you can mount this screen on the wall with a detachable arm, as it has a VESA 100 x 100 mm compatible wall mount. This standard allows the screen to be mounted on a suitable wall bracket or articulated arm.