Mono headset for long calls and music playback. Compatible with telework and Zoom meetings. Sanwa Supply MM-BTMH37BKN JAN code: 4969887575222 Suggested retail price: ¥3,960 (¥3,600 excluding tax) ◾️Specifications Bluetooth 5.0 compliant Transmission method: GFSK Frequency range: 2.402～2.480GHz Communication distance: 10m ※ Actual communication distance and usage time are theoretical values. They may vary depending on the usage environment and conditions. Transmission output: Class 2 Supported codecs: SBC Multi-point support Power supply: Built-in lithium polymer battery Charging time: Up to 2 hours Continuous usage time: - Talk time: Up to approximately 12 hours - Music playback: Up to approximately 14.5 hours - Standby time: Up to approximately 230 hours ※ The above are theoretical values. ※ Actual usage time may vary depending on the usage environment and conditions. Supported profiles: HFP, A2DP, AVRCP Size: Approximately W15 x D21 x H60mm Weight: Approximately 11g Playback frequency band: 20～20000Hz Microphone sensitivity: -44dB±3dB Microphone directivity: Omnidirectional Charging port: microUSB ◾️Features Bluetooth 5.0 compatible headset. Supports approximately 12 hours of continuous use. No need to worry about running out of battery even with long use. Multi-point support allows you to connect to both work and personal smartphones and switch between them. The ear hook can be attached to either the left or right side. Easy operation with 3 buttons for easy connection. A standard model that is easy to use even for beginners. ◾️Condition Used about 10 times, so there is a feeling of use, but the functions are not a problem. Easy to connect to smartphones and PCs via Bluetooth, and it's very convenient for making calls. I think it's clean, in my subjective opinion. I have cleaned and disinfected it again for the listing. Thank you.