Wireless Bluetooth headset. The compact, foldable design makes it easy to collapse and take with you. The built-in microphone allows for high-quality sound transmission. The micro SD card slot turns the headphones into an MP3 player – listen to music without connecting to a smartphone or laptop. Control buttons on the headphones let you answer calls or skip tracks without touching your phone. Thoughtfully designed in every way: when your headset's battery is low, simply plug it in and keep listening. With the headset, you can make calls or listen to internet radio from your laptop while moving freely around the room. Battery life of up to 8 hours.