Introduction
This manual provides instructions for the SENTRY OSHRUGGEDMD Bulk Rugged School Headphones. These headphones are designed for durability and are suitable for educational environments. This specific model includes a 3.5mm inline microphone and comes in a 24-count pack.
Package Contents
The 24-count package of SENTRY OSHRUGGEDMD Bulk Rugged School Headphones includes:
- 24 x SENTRY OSHRUGGEDMD Headphones with 3.5mm inline microphone
- Ear Cushions (pre-installed)
- Headband (integrated)
Image: The SENTRY Bulk Rugged School Headphones, showing a single headphone and the 24-pack box. The headphone features a black design with a 3.5mm jack.
Product Features
- Reinforced Construction: The headphones are engineered with a 4-point locking construction to provide an additional layer of protection for internal components, enhancing overall durability.
Image: A collage illustrating the 4-point locking construction for enhanced durability and a demonstration of the cord's resistance to chewing.
- Durable Braided Cord: The 6-foot braided fabric cord is designed for strength and resilience, tested to withstand significant stress and daily wear.
Image: A visual demonstration of the cord's strength, showing it supporting weight, alongside a detailed view of the inline volume control and microphone.
- Inline Volume Control and Microphone: Features an integrated volume slider and a microphone with a mute toggle for convenient audio and communication management.
- Flexible Headband and Joints: The headband is designed to be flexible, and the joints are constructed to be snap-proof, contributing to the headphones' overall robustness.
Video: A product overview demonstrating key features such as the flexible headband, inline volume control, drop-tested durability, flexible joints, and hygienic design. This video is provided by Sentry Ind.
- Drop Tested Design: These headphones have undergone drop testing to ensure resistance to impacts and maintain functionality after accidental falls.
Image: A collage illustrating the drop-tested durability of the headphones and the ease of cleaning due to their hygienic closed design.
- Hygienic Closed Design: The earcups and headband feature a fully closed design, minimizing crevices and making them easy to clean and maintain for hygiene.
- 3.5mm Connection: Provides broad compatibility with devices equipped with a standard 3.5mm audio jack, including laptops, Chromebooks, and mobile devices.
Setup
- Unpack: Carefully remove the headphones from their packaging.
- Identify Audio Port: Locate the 3.5mm audio jack on your device (e.g., laptop, tablet, smartphone). This port is typically marked with a headphone icon.
- Connect Headphones: Insert the 3.5mm plug of the headphones firmly into the device's audio jack.
- Adjust Headband: Extend or retract the headband slides to achieve a comfortable fit over your ears.
Operating Instructions
- Wearing the Headphones: Place the earcups over your ears, ensuring a comfortable and secure fit. The headband should rest gently on top of your head.
- Volume Control: Use the inline volume slider located on the headphone cord to adjust the audio output level. Slide towards '+' to increase volume and towards '-' to decrease volume.
- Microphone Usage: If your model includes an inline microphone, ensure it is positioned appropriately for clear voice capture. Use the mute toggle on the inline controller to quickly mute or unmute the microphone.
- Audio Playback: Once connected, begin audio playback from your device. Adjust the volume to a safe and comfortable listening level.
Maintenance and Care
- Cleaning: Wipe the earcups and headband with a soft, damp cloth. Avoid using harsh chemicals or abrasive cleaners. Ensure the headphones are dry before storage.
- Storage: Store headphones in a clean, dry place away from extreme temperatures and direct sunlight. Avoid tangling the cord.
- Handling: While designed for durability, avoid excessive force when adjusting the headband or pulling the cord.
Troubleshooting
| Problem | Solution |
|---|---|
| No sound from headphones. |
|
| Microphone not working. |
|
| Audio quality is poor or distorted. |
|
Specifications
- Model Name: Sentry Rugged Medium Size School Headphones
- Connectivity Technology: Wired
- Headphones Jack: 3.5 mm Jack
- Noise Control: Sound Isolation
- Frequency Response: 20 KHz
- Sensitivity: 103 dB
- Impedance: 32 Ohms
- Control Type: Volume Control, Mute Toggle
- Material: Plastic
- Ear Placement: On Ear
- Color: Black
- Unit Count: 24.0 Count
- Item Model Number: OSHRUGGEDMD
- UPC: 080068722618
Warranty and Support
Sentry Industries provides a 90-Day Guarantee on all products. This warranty covers defective or damaged products, offering free replacement for up to 90 days from the date of purchase.
For customer support, please contact Sentry Industries directly. As an American company with over 60 years in business, support is available from their New York office.
For more information, visit the official SENTRY Store: SENTRY Industries Store





