Sanwa Supply Bluetooth Headset external Black Free (with microphone) MM-BTMH61BK

[About clocks that synchronize time via radio waves] The function of clocks that synchronize time via radio waves only works in the Japanese area. Please be careful. Comes with a unidirectional external microphone. The headset itself also has a microphone, so you can use the headset's microphone when you go out, or use an external microphone when indoors, depending on the purpose. The external microphone can be moved and adjusted to the desired position. The microphone is placed near your mouth, so you can talk with confidence. The soft ear hooks won't hurt your ears.