Logitech Z407 - Android Edition - speaker system - for PC - 2.1-channel - wireless - Bluetooth - USB - 40 Watt (total) - graphite gray. Dial into great sound for your desktop with Z407 Bluetooth computer speakers. Get immersive sound with a down-firing woofer that adds "boom" to your sound, and digital signal processing that keeps clarity across the sound spectrum. Stylish oval satellite speakers lay horizontally or vertically. Position them however you like to curate your space. Control it all with the Bluetooth-enabled wireless control dial. Adjust bass and volume, skip and pause tracks from up to 30-meter line of sight range. Connect with Bluetooth, USB-A, or 3.5 mm inputs.