Devia Smart M5 are over-ear Bluetooth 5.3 OWS headphones with a charging case. The headphones support OWS (Over-ear Wireless Stereo) technology, allowing both earphones to connect to each other and create a wireless stereo set. The portable case with a built-in battery not only allows for charging but also provides safe storage for the headphones in your pocket, bag, or backpack. Free your hands and listen to music or internet radio while working, walking, training, or driving. Devia Smart M5 OWS headphones are an ideal solution for users of smartphones, computers, notebooks, tablets, and other devices that support Bluetooth technology. They are compatible with most devices running Android and iOS. The headphones also feature a microphone, allowing you to easily make voice calls. The talk and music listening time on a full charge is approximately 240 minutes, depending on the volume level, thanks to the use of energy-saving Bluetooth 5.3 technology.