Thank you for choosing from among many options. Earphones Wireless Earphones Black Ear Cuff Automatic Pairing Bluetooth 5.3 Ear Cuff Structure Clip-on Wear Comfortable True Wireless Headphones Automatic Pairing Stereo Sound Built-in Microphone Audio Equipment These are very popular ear cuff wireless earphones. Unlike typical earphones, these bone conduction earphones with an ear cuff structure fit any ear shape by clipping onto the ear. No problem even for those with ears that don't easily accommodate earphones! Ear cuff earphones don't block your ears, allowing you to work in all situations, such as telework, sports, and while traveling. Also, they are completely separated left and right, so you can wear them comfortably with any hairstyle without worrying about neckbands. They use the latest Bluetooth version 5.3, achieving fast and stable communication! Automatic pairing for devices with initial pairing settings. Comprehensive compatibility, supporting devices with Bluetooth functionality. Standby time: Approximately 300 hours Talk time: Approximately 30 hours Charging time: Approximately 1 hour Purchased on Mercari and used only once on one ear. Cleaned and operation confirmed. This is a used item. Returns and exchanges are not possible. Please purchase with the understanding of the above. Bulk purchase OK. Please comment before purchasing.