| MRC | Criteria | Characteristic |
|---|---|---|
| AEZD | SWITCH | NOT INCLUDED |
| AHEQ | EARPHONE ELEMENT TYPE | DYNAMIC |
| AHES | EARPHONE QUANTITY | 1 |
| BKSQ | EARPHONE IMPEDANCE RATING | 135.0 OHMS MINIMUM AND 249.0 OHMS MAXIMUM |
| BKST | EARPHONE IDENTIFYING NUMBER | H51 PART NO. |
| BKSW | MICROPHONE ELEMENT TYPE | DYNAMIC |
| FEAT | SPECIAL FEATURES | COMPLETE HEADSET, INCLUDING H31CDCAPSULE, 15 FOOT CORD, PUSH TO TALK SWITCH |
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