This is the ELECOM Bluetooth hands-free headset "LBT-HS11". It's a wireless headset for making calls that easily connects to smartphones and computers. It has an ear hook for a stable fit and is comfortable to use for long periods. It's compatible with either ear and comes with two types of ear caps. ・Color: Blue ・Talk Time: Approximately 10 hours ・Standby Time: Approximately 100 hours ・Bluetooth Ver. 5.0 ・Supports multi-pairing ・HD Voice compatible It has been opened, but is unused. The outer box has some scratches and sticker residue. Please note that the operation has not been confirmed.