ISOtunes Sport DEFY Slim Electronic Earmuff (Non-Bluetooth) – 21 dB NRR, IPX4

Stay protected and aware at the range or on the job with the ISOtunes Sport DEFY Slim Electronic Earmuff (Non-Bluetooth). Built for shooters, hunters, and outdoor users who want reliable hearing protection without wireless features, DEFY Slim pairs a low-profile fit with intelligent sound management for clear awareness and fast impulse-noise suppression.

Tactical Sound Control™ enhances ambient audio so you can hear range commands and conversation, then reacts in under 2 milliseconds to reduce harmful impulse noise to safe levels. The slim cups and lightweight build support a comfortable cheek weld and all-day wear, while the adjustable headband delivers a secure fit.

Designed for tough conditions, DEFY Slim is IPX4 water-resistant and powered by 2× AAA batteries for up to 300 hours of use. An included auxiliary (wired) audio cord offers simple, distraction-free listening when needed—no pairing required.

Key Features

• Non-Bluetooth electronic earmuff for distraction-free protection

• Tactical Sound Control™: enhances hearing, suppresses loud impulse noise in <2 ms

• ANSI-certified 21 dB NRR hearing protection

• Up to 300 hrs battery life with 2× AAA (included)

• IPX4 water resistance for outdoor use

• Slim, lightweight design (~289 g) with adjustable headband; gel cushion compatible (sold separately)

• Includes auxiliary audio cord for wired listening

This listing focuses on safety/hearing protection for lawful sport and outdoor use and does not promote weapons or unsafe activity.

In-Store Pick Up

Some large items, such as Modular Pig Traps and Gun Safes are in-store pick up only - free delivery is not available for these items

Order Online Only – Not Available In-Store
Please note that this item is an online exclusive and is currently not stocked at our physical storefronts. Because it ships directly from our central fulfillment center, your order skips the retail middle-step—allowing for faster handling and quicker delivery times straight to you.

Current Promotion: Free Local Delivery Available for all Gun Safes (Local Townsville and selected surrounding areas - Contact us for your location eligibility)

Free Standard Delivery

Free standard delivery is available for all orders over the value of $249, signatures may be required for this service.

Flat Rate Shipping

• $20 Flat rate shipping on all orders up to $249
• $30 Express shipping option for all orders

See Shipping Policy for full details