3M WorkTunes™ Wireless Hearing Protector
Featuring Bluetooth® wireless technology for entertainment and hearing protection.
Basic Operations
Installing Batteries
Insert two 1.5V AA batteries as shown. Close battery door until it clicks.
Power and Volume
Press and hold the On/Off/Volume button for 2 seconds to power the headset on. Turn the On/Off/Volume knob clockwise to control volume.
Fitting Headset
Fully extend sliders and place cups over ears. Then, tighten the headband using the sliders.
Headband Padding
For improved comfort, insert the Comfort Pad into the headband holes from below with the textured cushion facing down. To remove the padding, hold the headband securely and push down on the padding.
Low Battery Warning
? The headset will give a "battery low" warning every minute when battery voltage is low. Additional warnings will occur as the hearing protector powers down. Replace batteries at this time.
Auto Shut-off
⏳ After 2 hours of non-activity, a 10-second countdown will begin before the hearing protector automatically powers down. To reset auto shut-off, simply adjust the volume knob.
Safe Volume Control
? The safe volume control technology allows for increased music volume while protecting your hearing by controlling sound levels over an 8-hour workday. Higher sound exposure is allowed for a period of time, and then gradually reduced if necessary below the long-term average of 82 dB(A) for extended use.
Music Equalizer
Press and hold the source button. The device will cycle through the three equalizer modes (Pop, Rock & Flat). Release the button when you reach the desired mode.
AM/FM Radio
Press the source button to activate AM/FM Radio. AM/FM Radio allows you to scan through all radio frequencies, save your favorite stations, and recall your saved stations.
Operating Modes:
- Frequency Mode: Press the Function button to select this mode for scanning stations. Turn the tuning knob clockwise to scroll through stations. Press the tuning knob to seek stations.
- Saving Stations: Press and hold the Function button for 2 seconds to save a station.
- Recall Mode: Press the Function button to select this mode for scanning saved stations. Turn the tuning knob clockwise to scan through your saved stations.
- Deleting Stations: Press and hold the Function button for 2 seconds to delete a saved station.
Bluetooth® Mode
Press the source button to activate Bluetooth® Mode. Bluetooth® Mode allows you to connect earmuffs to your Bluetooth® Device.
Pairing a Device:
Press and hold the Function button for 2 seconds to enter Bluetooth® Pairing Mode. On your device, connect to "Worktunes Wireless" using Bluetooth. You will hear "Bluetooth Connected" when your device is paired successfully.
Controls:
Turn the tuning knob to scroll forward or backward. Press the tuning knob to pause/play.
Audio Input Mode
Connect the device to auto-activate Input Mode. Audio Input Mode allows you to directly connect earmuffs to any device. Note: You can also use the source button to activate Input Mode.
Connecting a Device:
Connect the device using the included 4-pole stereo audio cable. Turn on headset. Use headset to control ambient volume. Use device to control input.
Controls:
Turn the tuning knob to scroll forward or backward. Press the tuning knob button to pause/play.
Quickstart Guide Summary
The device offers several modes accessible via the SOURCE and FUNC buttons:
- AM/FM Modes: Press SOURCE to activate. Use FUNC to select Frequency or Recall modes. Tune/Seek stations using the knob. Press/hold FUNC to Store or Delete stations.
- Bluetooth® Mode: Press SOURCE. Press FUNC to Pair. Use the knob for Fwd/Bck and Pause/Play.
- AUX Mode: Connect device via cable. Use knob for Fwd/Bck and Pause/Play.
Important User Information
- For best protection, ensure ear cushion sealing rings seal firmly against the head. Avoid interference from hair, eyeglass temples, pencils, or caps.
- Do not bend or reshape the headband, as this will cause a loose fit and sound leakage.
- Inspect earmuffs regularly for cracks or worn parts and replace as needed. Typical life for foam cushion sealing rings is six months.
- Clean the exterior of the hearing protector regularly with soap and warm water. Do not immerse in water.
- Do not store the hearing protector at temperatures above 131°F (55°C).
- Contact the manufacturer for information on potential damage from certain chemical substances.
CAUTION: Noise and Chemical Risks
⚠️ To reduce risks associated with harmful noise or chemicals: If instructions are not followed, bodily injury may result or protection may be severely affected.
- Do not store with batteries installed. Leaking batteries can cause injury or damage.
- These hearing protectors help reduce exposure to hazardous noise. Misuse or failure to wear them at all times when exposed to noise may result in hearing loss or injury.
- If there is any drainage from your ear or if you have an ear infection, consult your physician before wearing hearing protection.
For proper use, see user instructions or call 3M Technical Service at 1-800-494-3552.
Noise Reduction Rating (NRR)
The Environmental Protection Agency (EPA) selected the Noise Reduction Rating (NRR) as the measure of a hearing protector's noise-reducing capabilities. 3M makes no warranties as to the suitability of the NRR as a measure of actual protection from any noise level, since such protection depends on the sound level, how long you listen, and how well you fit the earmuff. Although hearing protectors can be recommended for protection against harmful effects of impulse noise, the NRR is based on the attenuation of continuous noise and may not be an accurate indicator of protection against impulse noise like gunfire.
The NRR for the Worktunes™ Wireless is 24 dB(A). Improper fit will reduce its effectiveness. Consult instructions for proper fit.
The level of noise entering a person's ear when a hearing protector is worn as directed is closely approximated by the difference between the A-weighted environmental noise level and the NRR.
Attenuation Data (ANSI S3.19 – 1974)
| Test Frequency (Hz) | 125 | 250 | 500 | 1000 | 2000 | 3150 | 4000 | 6300 | 8000 | NRR |
|---|---|---|---|---|---|---|---|---|---|---|
| Mean Attenuation (dB) | 20.3 | 21.6 | 30.4 | 35.7 | 33.1 | 36.4 | 38.9 | 37.3 | 36.4 | 24 |
| Standard Deviation (dB) | 3.5 | 2.7 | 3.2 | 3.1 | 3.0 | 3.6 | 3.9 | 3.4 | 3.6 |
Example Calculation
1. Environmental noise level at the ear: 92 dBA.
2. NRR: 24 dB(A).
3. Noise entering the ear: Approximately 68 dB(A).
Caution: For noise environments dominated by frequencies below 500 Hz, use the C-weighted environmental noise level. NRR was achieved under laboratory conditions.
Audio Input Level
The audio level in the hearing protector is dependent on the audio input level. To prevent harmful noise levels, the audio level is limited to 82 dB(A) when connected to a Personal Music Player (PMP). If connected to a device with a very high output level, it is the user's responsibility to set the audio input level to a safe level. The maximum permitted audio input level for 8 hours of usage time is 1 V.
Warranty
The Worktunes™ Wireless is warranted to be free of defects in material and workmanship for one (1) year from the date of original purchase. 3M will, at its option, repair or replace without charge, except for transportation costs, parts that fail under normal use and service when operated and maintained according to instructions. This warranty does not cover damage caused by misuse, abuse, or unauthorized modifications. Proof of purchase is required.
Lithium Ion Battery Pack (Optional)
Installing Battery:
Install one optional Lithium-ION battery pack as shown. Close battery door until it clicks.
Charging Battery Pack:
Insert the micro-USB connector cable into the micro-USB jack. Connect the other end of the cable to a USB power source to begin charging. The LED will blink when the battery pack is charging, and turn solid when charging is complete.
Regulatory Information
FCC Caution:
Any Changes or modifications not expressly approved by the party responsible for compliance could void the user's authority to operate the equipment. This device complies with part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) This device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation. This equipment complies with FCC radiation exposure limits set forth for an uncontrolled environment. This transmitter must not be co-located or operating in conjunction with any other antenna or transmitter.
IC Warning:
This device complies with Industry Canada licence-exempt RSS standard(s). Operation is subject to the following two conditions: (1) this device may not cause interference, and (2) this device must accept any interference, including interference that may cause undesired operation of the device. The device has been tested for compliance with RF field strength limits; users can obtain Canadian information on RF exposure and compliance.
Important Safety Instructions
To prevent possible hearing damage, do not listen at high volume levels for long periods.
Please use appointed battery in case of explosion risk. Dispose of lifeless battery under guidance. Recycle your phone.
The WEEE logo ([WEEE symbol]) appears on the product to indicate that this product must not be disposed of or dumped with your other household wastes. You are liable to dispose of all your electronic or electrical waste equipment by relocating over to the specified collection point for recycling of such hazardous waste.
