Earpiece

When talking about how airtight a product is, there is a close
relationship between the feel of bass tones and sound insulation.
It is possible to change the bass volume and sound insulation
considerably depending on your choice of earpiece.
The earphone earpieces come in two types for you to choose from – silicon and foam.
It is possible to achieve what could be termed a perfect fit, irrespective of the size of the wearer's
auditory canal. There is a close relationship between the airtight level of the product, bass tones
and sound insulation; depending on the earpieces chosen, it is possible to considerably
change the bass volume and sound insulation. In particular, the foam type earpieces
have sound insulation properties close to noise cancelling types.
Silicon earpiece
Please choose from four types of silicon earpieces (A type, B type, C type, E type). 
Please refer to “Type Comparison” for the differences in types.
For handling each earphone model, please refer to “Handling of Different Models Table”.

* Type A, Type B and Type C and the foam types come in three sizes – S/M/L
* Type E comes in five sizes – SS/S/M/L/LL.
* Type C comes in BLACK and BROWN only.
* With Type E (CLEAR red axis), the earbud is transparent, while the axis is red (to distinguish between sizes, the LL, M and SS sizes are pink). Compared to the black, the clear version of Type E differs slightly in terms of surface fluency and hardness, and the degree to which they are airtight changes slightly; owing to this, bass tones become a little lighter, high-pitched tones sound clear, and the sound tends toward clarity.
Foam earpiece
There is a close relationship between the airtight level of the product, bass tones and sound insulation.
Depending on the earpieces chosen, it is possible to considerably change the bass
volume and sound insulation. In particular, the foam type earpieces have sound
insulation properties close to noise cancelling types.

* Exclusive to the F series. Included with the product at time of purchase.