Introducció
The ISOtunes DEFY Slim Passive Earmuffs are designed to provide effective noise isolation and hearing protection. These over-ear earmuffs feature foam cushions and an adjustable headband, making them suitable for various loud environments, particularly for shooting sports and hunting. They are tested to the ANSI S3.19-1974 standard and are EN 352 Certified, offering a 23 dB Noise Reduction Rating (NRR) and 28 dB Signal-to-Noise Ratio (SNR).
Les característiques clau inclouen:
- Passive 23 dB Noise Reduction Rating (NRR) for all-day hearing protection.
- Ultra-slim design to prevent interference during activities.
- Construcció lleugera i duradora.
- All-day comfort with foam ear cushions and an adjustable headband.
- Compatibility with gel cushions for enhanced comfort and seal (sold separately).

Figure 1: ISOtunes DEFY Slim Passive Earmuffs in Matte Black.
Contingut del paquet
Verifiqueu que tots els elements siguin presents al vostre paquet:
- 1 x ISOtunes DEFY Slim Passive Earmuff

Figura 2: Contingut inclòs a la caixa del producte.
Configuració i ajust
Proper fit is crucial for optimal hearing protection. Follow these steps to set up and adjust your earmuffs:
- Prepare the Earmuffs: Gently pull the earcups apart to widen the headband.
- Position on Head: Place the earmuffs over your ears, ensuring the earcups fully cover your outer ears.
- Ajustar la diadema: Extend or retract the headband by sliding the earcups up or down the metal wires until a snug and comfortable fit is achieved. The headband should rest over the top of your head.
- Comprovació del segell: Ensure there are no gaps between the ear cushions and your head. Hair, eyewear, or other objects can compromise the seal and reduce effectiveness.

Figure 3: Visual guide for adjusting the earmuffs for a proper fit.

Figura 4: Example of earmuffs worn correctly, covering the ears completely.
Instruccions de funcionament
The ISOtunes DEFY Slim Passive Earmuffs provide passive hearing protection, meaning they reduce noise by physically blocking sound waves. No batteries or electronic components are required for their primary function.
Classificació de reducció de soroll (NRR)
These earmuffs have a Noise Reduction Rating (NRR) of 23 dB. This rating indicates the average amount of noise reduction provided when worn correctly. The higher the NRR, the greater the noise reduction.
Comprensió dels nivells de soroll
It is important to understand typical noise levels to appreciate the protection provided by your earmuffs. The following table illustrates common sound levels and their potential impact:

Figure 5: Guide to common noise levels and their potential for hearing damage.
| Font de so | Decibel (dB) Level | Effect/Comment |
|---|---|---|
| Fired Gun | 140 dB | Llindar del dolor |
| Power Saw and Pneumatic Drill | 120 dB | |
| Motoserra | 110 dB | Dangerous after 2 minutes |
| Snow and Leaf Blower | 100 dB | |
| Tallagespa | 91 dB | Dangerous after 2 hours |
| Workshop Vacuum | més de 85 dB | Dangerous after 8 hours |
| Assecador de cabells | 70 dB | Interferes with conversation |
| Conversa normal | 60 dB | Còmode |
| Soft Whispers | 30 dB | Molt tranquil |
| So feble | 10 dB |
Always wear your ISOtunes DEFY Slim Passive Earmuffs in environments where noise levels exceed safe limits to protect your hearing.
Manteniment i cura
Proper maintenance will extend the life of your earmuffs and ensure continued performance.
- Neteja: The earmuffs should be cleaned regularly. Use a damp cloth with mild soap and water to wipe down the earcups and headband.
- Instruccions de cura: Hand wash only. Do not submerge the earmuffs in water.
- Emmagatzematge: Store your earmuffs in a clean, dry place away from extreme temperatures and direct sunlight when not in use.
- Inspecció: Periodically inspect the ear cushions for signs of wear, cracking, or hardening. Replace worn cushions to maintain an effective seal and comfort.
Resolució de problemes
If you experience issues with your earmuffs, consider the following common solutions:
- Reduced Noise Protection:
- Ensure the earmuffs are properly sealed around your ears. Adjust the headband for a tighter fit if necessary.
- Check for any obstructions (e.g., hair, eyewear temples) that might break the seal.
- Inspect ear cushions for wear or damage. Worn cushions should be replaced.
- Malestar:
- Adjust the headband to relieve pressure points.
- Assegureu-vos que els auriculars estiguin col·locats correctament sobre les orelles.
- Considera la compraasing gel cushions (sold separately) for enhanced comfort.
Especificacions
| Especificació | Valor |
|---|---|
| Número de model | IT-77-78-79-P |
| Classificació de reducció de soroll (NRR) | 23 dB |
| Relació senyal/soroll (SNR) | 28 dB |
| Compliment estàndard | ANSI S3.19-1974, EN 352 Certified |
| Pes de l'article | 8.11 unces |
| Fabricant | Haven Technologies, Inc. |
| Instruccions de cura | Rentat només a mà |

Figura 6: Mésview of key product specifications and features.
Garantia i Suport
Specific warranty details are not provided in this manual. For information regarding warranty coverage, please refer to the product packaging or the official ISOtunes weblloc.
Atenció al client
For further assistance, technical support, or inquiries about your ISOtunes DEFY Slim Passive Earmuffs, please visit the official ISOtunes store or contact their customer service directly.
Official ISOtunes Store: Botiga ISOtunes a Amazon





