JVC Kenwood. Adopts "spiral dots" on the inner wall of the earpiece. Dimples arranged in a spiral shape suppress muddy sound. Compatible models: HA-FX1100, HA-FX850, HA-FX750, HA-FX700, HA-FX650, HP-FX500, HA-FXT200, HA-FXT200LTD, HA-FXT100, HA-FW01, HA-FW02, HA-FW03, HA-FX99X-B, HA-FX99XBT, HA-FD02, HA-FW02BT, HA-FD02BT Adopts "spiral dots" on the inner wall of the earpiece.
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