4-microphone ENC technology Clear sound on calls Two ear modes: in-ear and half-in-ear One speaker, two different designs FreePods 3C are equipped with detachable ear tips that provide two listening modes. When the ear tips are kept connected, BASS MODE blocks out ambient noise and reduces sound leakage for an enhanced bass experience. Additionally, the earplug can be removed to transition to AWARENESS MODE, allowing for greater comfort and awareness of the user's surroundings.