The Neckband Features 10Mm Drivers For The Immersive Signature Hd Sound. Hence The Collar Neckband Elevates The Listening Experience With Deep, Powerful, And Balanced Bass, Which Is Made For Bass-Loving Audiophiles. Moreover, The Company Claims That The Bass Matches Different Music Styles And Frequencies. Complete Comfort: Lightweight Neckband And Compact, Multi-Size Accessories Are Designed To Provide Lasting Comfort And Hold,Earbuds Magnetically Clip Together For Easy, Tangle-Free Use.