360 Spatial Sound Personalizer technology surrounds you in audio. Crystal clear sound with upward-facing X-balanced speaker unit and passive radiator. Connect to devices with a stable Bluetooth connection. Up to 12 hours of playtime on a single charge. Built-in microphone for hands-free communication. Multi-point connection lets you connect to two devices at once. Connects to BRAVIA TVs tablets laptops and more. IPX4 Rated splashproof. Fabric front and soft silicone neckband. Includes USB cable.