OnePlus BulletsWireless Z2 Neckband Earphone with Bluetooth 5.. In-ear design forcomfortable wearing.. Wireless connectivityfor hassle-free experience.. Built-in microphone foranswering phone calls. Volume control for easysound adjustment.. Bluetooth version 5 forfast and stable connection.OnePlus BulletsWireless Z2 Neckband Earphone with Bluetooth 5.. In-ear design forcomfortable wearing.. Wireless connectivityfor hassle-free experience.. Built-in microphone foranswering phone calls. Volume control for easysound adjustment.. Bluetooth version 5 forfast and stable connection