XO X33 is a 5.3 TWS bluetooth earbuds with charging box. The headphones support TWS (True Wireless Stereo) technology - both headphones connect to each other to create a wireless stereo system. In addition to the charging function, the portable box with a built-in battery allows you to safely store the headphones in your pocket, bag or backpack. Free your hands and listen to music, internet radio, while working, walking, training or driving. The XO X33 TWS headphones are ideal for users of smartphones, computers, notebooks, tablets and other Bluetooth-enabled devices. They are compatible with most Android and iOS devices. The headphones also have a microphone, so you can make voice calls without any problems. The duration of calls/listening to music on a full charge is approximately 240 minutes (depending on the volume level), thanks to the use of energy-saving Bluetooth 5.3 technology. #13#10