The Koss True Wireless in-ear earbuds utilise Bluetooth 5.0 low energy technology to connect to your media player wirelessly, so you can enjoy listening to your favourite music without annoying cables. They support about 5 hours of play and talk time. The earbuds feature a compact and discreet plug design to ensure excellent insulation against ambient sound. They include a microphone to let you receive your calls. The package also includes a charge case with built-in battery, which increases use to 25+ hours. Perfect for travelling.