Includes the main unit and ear hook (one size fits either ear) only. Retail price: 4,070 yen Purchased several years ago and stored without much use. I have confirmed that the power on/off LED lights up when charging, but I have not checked any further functionality, so I will consider it a junk item. Please refer to the official website for the manual. https://manual.buffalo.jp/buf-doc/supply/bshsbe18-600.pdf Product Details ■ Bluetooth® 3.0 + EDR compatible Bluetooth® single-ear headset ■ Improved call quality Equipped with CVC (ClearVoiceCapture) sound quality improvement technology, it provides comfortable calls with an "echo canceller function" that reduces the echo of your own voice and a bidirectional noise reduction function that cuts out unnecessary noise. ■ Records device information for up to 8 devices Equipped with a multi-pairing function, it can record connection information for up to 8 smartphones and computers, and after registering the devices, it starts connecting simply by turning on the power. May not be compatible with some mobile phone/smartphone models. ■ Long-lasting battery with 160 hours of continuous standby Can be used for up to 160 hours of standby and up to 6 hours of continuous talk time. You can use it without worrying about running out of battery when traveling or on long drives.