Sound Meets Style With Smartphone Playback Controls For Life On The Go. More Than Your Basic Pair Of Over-The-Head Headphones, The Sony Mdr-Zx310 Ap Headset Delivers Rock-Solid Audio Performance, Integrated Microphone For Hands-Free Calling And Media Playback Controls For Convenient Operation. Smartphone Playback Control- The Integrated Microphone And Multi-Function Control Button Make The Mdr-Zx310 Ap The Perfect Companion For Your Smartphone. Quality Sound- The Large 30 Mm Driver Units Coupled With Ferrite Magnets Will Accurately Reproduce A Broad, Dynamic Frequency Range. Swivel Earcups- The Slim, Swivel And Folding Style Earcups Stow Away For Compact Portability. Pressure Relieving Earpads- The Lightweight, Adjustable Headband With Swivel Ear Pads Is Designed For Comfort So You Can Enjoy Extended Listening Sessions Without Fatigue. Y-Type Cord- The Traditional Y-Type Cord Design Helps Reduce The Chance Of Tangles While The 4-Conductor Gold Plated, L-Shaped Plug Ensures A Good Connection.