MSA 10082377 APR Hygiene Gel Kit, Ring (2), Sealing, SOR60092 Cups shaped to fit both right hand and left hand shooters Well shielded waterproof microphones for optimum sound direction location Waterproof battery compartment Available as a foldable headband or as a neckband AUX input permits connection to external sources, such as communication radios, dog tracking devices, and mp3 players