Sennheiser CX 150BT In-Ear Wireless Black (508380) is an in-ear wireless headphone designed for everyday use. It features Bluetooth 5.0 for stable connectivity and supports multi-point pairing with two devices. AAC and SBC codec support ensures high-quality and balanced sound. It offers up to 10 hours of battery life with fast USB-C charging. A three-button remote allows easy control of music and calls. It includes four ear tip sizes for a secure fit and improved sound isolation.