Sony WI-XB400 Extra Bass Wireless Stereo Headset Bluetooth: The headphones use Bluetooth 5.0 technology and have a frequency range of 2.4 GHz. They support SBC and AAC audio formats. Battery: The headphones have a battery life of up to 15 hours and can be charged with a USB Type-C cable. They can be fully charged in about three hours. Microphone: The headphones have a built-in microphone for hands-free calling. Voice assistant: The headphones can connect to Google Assistant for voice access to music and other information. Driver unit: The headphones have a 12 mm driver unit. Neckband style: The headphones have a neckband style that allows them to be worn around the neck. Quick charge: The headphones can be quickly charged for 60 minutes of playback in 10 minutes. Tangle-free: The headphones have a magnetic housing to prevent tangling. Light weight: The headphones weigh 21 g.
