MINI-503 Bluetooth Headphone with Memory card slotPair and play with your Bluetooth deviceDual-mode Adaptive Noise CancelingIconic Beats sound2-3 hours rechargeable batteryTake hands-free calls with built-in mic FEEL YOUR MUSIC The Beats Acoustic Engine makes your listening experience personal and real. This is how music would sound if the artist could play it back for you in person. LIGHTER, STRONGER, AND MORE COMFORTABLE When we re imagined the iconic Studio, we designed it like a beautiful sports car and made disciplined choices. It is streamlined with fast curves, smooth surfaces. We reduced the original weight and gave it a lighter, stronger, and more comfortable headband. The softer ear cups have an ergonomic bellow that creates a flexible custom fit, so you can keep your music all to yourself.