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 are in-store pick up only - free delivery is not available for these items

Free Standard Delivery

Free standard delivery is available for all orders over the value of $149, with signatures required for this service.

Flat Rate Shipping

• $15 Flat rate shipping on all orders up to $149
• $25 Express shipping option for all orders

See Shipping Policy for full details