XO X33 are 5.3 TWS Bluetooth in-ear earphones with a charging box. The earphones support TWS (True Wireless Stereo) technology, allowing both earphones to connect to each other and create a wireless stereo set. The portable box, equipped with a built-in battery, not only charges the earphones but also provides a safe storage solution for your pocket, bag, or backpack. Enjoy music and internet radio hands-free while working, walking, training, or driving. The XO X33 TWS earphones 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 earphones feature a microphone for easy voice calls. On a full charge, the earphones provide approximately 240 minutes of call or music listening time, thanks to energy-saving Bluetooth 5.3 technology.