Sony WH-CH510 On-Ear Wireless Headphones – Black Key Features Quality audio experience  Bluetooth technology UP to 35 hours battery life Easy button operation Voice-assistant compatible Easy Hands-free calling 30mm Driver unit Frequency response 20Hz - 20,000Hz (44.1kHz Sampling) Overview Be free from cables and enjoy your music throughout the day with the Sony WH-CH510 ON-Ear Wireless Headphones. They product quality sound via Bluetooth wireless technology giving you the freedom to move. A battery life of up to 35 hours ensures you are never low on power during your day, and best of all a 10-minute charge offers up to 90 minutes of play time. It is easy to play, stop, skip to your favourite song, and adjust volume using the conveniently located buttons. Voice-assistant compatibility offers the ability to connect with your smartphone’s voice assistant by a simple press of a button. Box Contents Sony WH-CH510 On-Ear Wireless Headphones USB Cable: USB Type-C TM (Approx.20 cm)