Redmi SonicBass Wireless Neckband Earphone is equipped with a 9.2mm dynamic driver that delivers excellent sound quality. It has dual-mic environmental noise cancellation and an IPX4 waterproof rating. The Xiaomi Redmi SonicBass neckband provides 12 hours of music playback. It has stable Bluetooth 5.0 Connectivity. The multi-function button will help you to control it remotely, so you can't take your phone out of pocket.