WIRED Listen Only spo-disabled and fading—even in harsh outdoor

and fading—even in harsh outdoor conditions

Bundle includes: DEFY BT and ADVANCE BT Green (+included accessories)

True Wireless Design

and durability

Extra Battery

WIRED Listen Only spo-disabled and fading—even in harsh outdoorWired earplug safety headphones designed for all day listening in loud industrial environments. ISOtunes WIRED Listen Only is sweat and water resistant with a 29 NRR and steady state background noise isolation for clear calls in loud environments. Please note: this product does NOT have a microphone or volume control module. If interested in a Wired product with full functionality, see ISOtunes WIRED here.