Mackie CR4-XBT Creative Reference Series 4" Multimedia Monitors w/ Bluetooth and then it slides to

and then it slides to the bottom shoe and locks with a quick release button

then simply attach the bottom piece using the included screws and Allen wrench

allowing for left or right orientation

it will mute your audio

Mackie CR4-XBT Creative Reference Series 4" Multimedia Monitors w/ Bluetooth and then it slides tohe Mackie CR4 XBT is a pair of Bluetooth enabled Creative Reference Series 4" multimedia monitors offering a compact solution for quality audio playback in home studios and gaming setups. With 50W of amplification driving 4" woofers and 0. 75" tweeters, the CR4 XBT monitors work well whether you're creating content or casually enjoying some tunes. The pair consists of one passive speaker and one powered speaker that connect with an included speaker