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 create a wireless stereo set. The portable case with an integrated battery not only charges the headphones but also provides a secure storage solution for your bag, backpack, or purse. Enjoy hands-free music listening or internet radio while working, walking, exercising, or driving. The XO X33 TWS headphones are ideal for users of smartphones, computers, laptops, tablets, and other Bluetooth-enabled devices, and are compatible with most Android and iOS devices. Additionally, the headphones feature a microphone for easy voice calls. When fully charged, you can expect about 240 minutes of talk or music time, thanks to the energy-saving Bluetooth 5.3 technology.