LOGITECH Z50 SPEAKER BLUE Small speaker. BIG VOICE. Deceptively loud Large for a small speaker, the 2.25-inch driver produces 10W of peak power for a surprisingly loud sound. Small Footprint The mini speaker is compact and portable, giving you the freedom to play your favorite multimedia around the home. Use with multiple devices The 3.5mm audio line in enables you to connect and listen to your favorite multimedia through multiple devices. No need to recharge The mini speaker uses an AC power supply, so there is no need to ever recharge your Z50. Plug and play Designed for plug and play simplicity, just connect the Logitech Z50 to your smartphone, tablet or laptop.