The XO X33 are 5.3 TWS Bluetooth in-ear headphones with a charging case. The headphones support TWS (True Wireless Stereo) technology, allowing both earbuds to connect with each other and form a wireless stereo set. The portable case, equipped with a built-in battery, not only charges the headphones but also provides a secure storage solution for your bag, backpack, or handbag. Enjoy music and internet radio hands-free while working, walking, exercising, or driving. The XO X33 TWS headphones are an ideal choice for users of smartphones, computers, notebooks, tablets, and other Bluetooth-enabled devices, and they are compatible with most Android and iOS devices. Additionally, the headphones feature a microphone for easy voice calls. When fully charged, the headphones offer about 240 minutes of talk or music time, thanks to energy-saving Bluetooth 5.3 technology.