Trust Arys Premium 28 Watts 2.0 USB Powered Speakers PC, Laptop, Tablet Smartphone Trust quality: Dutch design and 30+ years of experience in serving over 100 million satisfied customers 28W peak power (14W RMS). Metal grill for extra protection. Large, illuminated and easy to reach volume control at the front. Headphone connection. Line-in connection for tablet, phone or mp3 player. USB-powered  no wall power needed