Yamaha TW-E3C True Wireless Earbuds (Red) - Manual (Page 9)

Eartips (XS, S, M, L; one set each)
Note: The M-size eartips are pre-attached.
XS S M L
Safety Brochure
NOTE
(
The earbuds are stored in the charging case.
(
The earbuds feature a built-in microphone.
( The charging case contains a battery for charging the earbuds.
9
Introduction > Accessory and part names