Elecom Bluetooth Headset, Black New, unopened, but has been in someone's possession once. ■ Bluetooth® 4.1 adopted! ■ Comfortable wireless use with one or both ears! A stereo headset that allows stereo music listening by attaching the detachable right-ear earphone. Ideal for answering incoming calls while listening to music. Of course, it can also be used as a single-ear headset. ■ Includes a 3D fit structure ear hook for comfortable wear The earphone shape is designed for comfortable wear, providing a comfortable fit even for long periods. Furthermore, a 3D fit structure ear hook is included for stable wearing. ■ Charging connector is microUSB type The charging connector is the same microUSB type as smartphones. Charging is possible by connecting your smartphone's charging cable. It can be connected not only to mobile phones and smartphones but also to computers. When connected to an iPhone, the headset's battery level can be displayed on the iPhone screen. ■ Easy connection for anyone Compatible with the easy BT setting app for Android smartphones. You can easily pair and connect by following the guide. The app can be downloaded from Google Play. ※ Not compatible with smartphones running Android 6.0 or later. Also includes an easy connection guide for those using a Bluetooth headset for the first time, allowing for easy and worry-free setup. ■ Supports multi-point Supports multi-point and can connect to two smartphones or mobile phones. You can play music on one smartphone and use the other to wait for calls. ■ Equipped with a large-capacity battery Equipped with a large-capacity battery that allows for 7 hours of continuous talk time and 6 hours of continuous music playback. The power can be turned on/off with a slide switch, reducing power consumption when not in use.