OnePlus' Buds are nearing release, as evidenced by their certification from the Finish SGS Fimko agency. The certification itself reveals the model number of the OnePlus Buds - E501A and the charging speed of the charging case - 5V/1.5A or 7.5W. What we know so far of the OnePlus Buds is that they'll have an in-ear design and be truly-wireless, as opposed to the Bullets Wireless, which have the neckband form factor. We expect to see the Buds alongside the OnePlus Nord on July 21. Via
Source: https://www.gsmarena.com/oneplus_buds_certified_in_finland_expected_alongside_oneplus_nord_on_july_21-news-44159.php