Yamaha TW-E7B Noise-Canceling True Wireless In-Ear Headphones (White) - Manual (Page 8)

Accessory and part names
Make sure that all of the accessories are included with this product.
Earbuds
b c
d
a
Earbud (R) Earbud (L)
a Function key
b + (plus) key
c − (minus) key
d Indicator
Charging case
e
f
Front Back
e Charging indicators
f Charging connector
8
Introduction > Accessory and part names