AIR DEFENDER Foam Ear Cushions ISOtunes WIred Listen Only Replacement Lithium Ion Battery for

Replacement Lithium Ion Battery for extra battery life

ISOtunes Sport ADVANCE BT Certified Refurbished comes with 4 pairs of TRILOGY™ foam eartips

backed by our ISOtunes Certified Refurbished Promise with a 90 day warranty

With a station-saving memory function for easy listening and up to 60 hours of battery life

3 pairs of Short TRILOGY™ eartips (S

AIR DEFENDER Foam Ear Cushions ISOtunes WIred Listen Only Replacement Lithium Ion Battery forISOtunes 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 1 3 months depending on the frequency of use.