B&O signature soundThe B&O Beoplay Earset connects to your device via Bluetooth 4.2 with aptX codecs that provide excellent sound, whether you're listening to music or talking on the phone. The close-fitting and comfortable fit makes it possible to hear ambient sounds without affecting sound quality.BluetoothWireless Bluetooth 4.2 connection ensures crisp and clean sound transmission with almost non-existent lag. With AAC codec support, you can play a wide range of file formats. On-ear slider allows you to easily pair the headphones with your phone or other Bluetooth audio source.In-line microphone and remote controlBang & Olufsen Beoplay Earset headphones come with a high-quality built-in microphone and track control so you can easily take calls or change music without having to take out your smartphone or mp3 player.Battery lengthThe B&O Beoplay Earset offers up to 5 hours of battery life and is fully charged in just one hour. Forgot to charge your Earsets? No problem. After only 20 minutes of charging, you can listen to music for an hour.High quality materialsB&O Beoplay Earsets are made from premium materials that are carefully selected to enhance sound quality. Durable and stylish aluminum construction will ensure that these headphones will last and deliver high-quality music wherever you are.