Wireless, Bluetooth headphones made from RCS-certified recycled ABS. RCS (Recycled Claim Standard) is a standard used where part of a product is made from recycled materials. The adjustable headband makes these headphones soft and comfortable. They are also foldable, making them easy to carry and store when not in use. Stream music via Bluetooth (version 5.0) and enjoy perfect stereo sound. With a built-in Li-ion polymer 200mAh battery, you can enjoy 7 hours of listening time between charges (at 70% volume). Includes a micro-USB charging cable and user manual. Each item is supplied in an individual brown cardboard box.