The Ø 3.5mm Miniature jack is sandwiched between the PCB and the top case for a solder-free assembly.

The spring terminal absorbs the impact when the device is dropped and reduces performance due to contact failure.

Four pole with one switch function configuration (left, right, ground and one additional signal).

The sleeve has a make switch system that utilizes a plug detection mechanism.

Self-cleaning effect for improved contact reliability.