The NAD VISO HP20 In-Ear design offers serious audiophiles excellent noise isolation and consistent performance. The HP20 uses precision miniature drivers that result in superb audio accuracy and when combined with RoomFeel technology simply offer more musical realism than you"ll hear in other headphones. The HP20 offers a selection of different sized soft silicon ear tips to ensure a comfortable fit while the handy travel case is small enough to slip into a pocket, purse or pack. VISO HP20 Features: In-Ear Noise Isolating Headphone RoomFeel Technology for Superior Sound All Alloy Construction Ultra-soft replaceable gel inserts in 5 sizes ensure excellent comfort Neoprene Travel Case Apple 3-button multi-click remote with microphone Includes Aircraft/Stereo Adaptors