Enjoy your music with these sound-isolating headphones, featuring powerful 11mm drivers and a neodymium magnet for high-quality sound. The colorful Boston Celtics logo helps you show off your team spirit. What's Included: Skullcandy Ink'd Boston Celtics Earbud Headphones, Owner's manual, Product Features: Earbud design, Directs high-quality sound into the ear. Neodymium magnet, For sound reinforcement. 11mm power drivers. Deliver powerful audio. Sound-isolating technology. Reduces outside noise so you can focus on your music. Boston Celtics design. Let's you display your team spirit. Interchangeable ear gels. Offers comfortable extended listening. 20Hz - 20kHz frequency response. For faithful sound reproduction. 102dB sensitivity. Provides powerful sound. 16 ohms impedance. To efficiently conduct power.