AIR DEFENDER Foam Ear Cushions Style_Over-Ear Optional AAA battery** (3) use

Optional AAA battery** (3) use for up to 100 hour battery life

and charging case lanyard

ADVANCE BT is the first of its kind

Extra Durability

INSTINCT is a shooting earbud that packs a big punch in a little package

AIR DEFENDER Foam Ear Cushions Style_Over-Ear Optional AAA battery** (3) useISOtunes TRILOGY AIR DEFENDER Hygiene Kit offers a trifecta of benefits for optimal hearing protection: superior comfort, noise isolation, and sound quality. Packaging includes 2 ear cushions, 2 outer fabric replacements and 2 foam ear cups. AIR DEFENDER Hygiene Kit is compatible with the ISOtunes AIR DEFENDER. For regular users, we recommend replacing ear cushions, fabric lining, and foam inserts every 3 9 months depending on the frequency of use.