The Linz Eco TWS earbuds incorporate Environmental Noise Cancelling (ENC) and Bluetooth version 5.3, providing fast and reliable auto-pairing while delivering high-definition stereo sound. The ultra-lightweight earbuds ensure a comfortable fit while, at the same time, the on-bud has an easy-to-operate multifunction button; it provides a track selector, volume control and a one-touch call-back function, leaving your hands free while out and about. Recharge the earbud batteries by placing them back into the charging case. Includes travel charge case, a Type-C charge cable and user manual. Material: Recycled ABS.