Sony WH-CH520 is a stylish and comfortable headphone with wireless connection. They provide up to 50 hours of music without recharging! The model has a built-in microphone that allows you to transmit speech to the person you are talking to without any noise and disturbance. You can easily answer calls by pressing the buttons on the ears so you no longer need to take your phone out of your pocket every time. These Bluetooth headphones can be connected to two Bluetooth devices at the same time! When you have an incoming call, your headphones automatically recognize the desired device and connect to it. The compact and lightweight design combined with the rotary ears turns these headphones into an ideal travel assistant. Thanks to the battery life of up to 50 hours, you can enjoy your favorite music and not worry that the headphones may run out. When the battery is low, you can charge it in 3 minutes to get 1,5 hours of extra music! Press the voice control button to perform an action using Google or Siri without looking up from your business. For example, play your favorite songs, send a message or make a call, get a quick response, manage your calendar and reminders.