They also have a built in microphone that the student uses to Zoom with a math tutor. Like the Earfun Air Pro that came out a month or ago again this appears to be a rebagged OEM version of another set of earphones from a different manufacturer, and this time its the FIIL T1 Pro. Obviously Bose is cutting some corners these days because the quality is dropping fast. If you aren?t wanting to hot glue or restrand I say keep looking. Definitely Recommend This Seller I am using the JBL Flip 4 and instead of going for JBL Flip 5 I opter for the Sony -SRS-XB23. Overall, very happy with my purchase and would highly recommend to other people. All my other 12s fit perfectly. Lol all in all a good purchase. If you wanna get more in depth you can watch some guides but overall it?s easy to navigate and not riddled with bugs (so far) like Synapse.