Shure Incorporated
21/28
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Noise Attenuation
up to 37 dB
Frequency Range
21 Hz–17.5 kHz
Input Connector
MMCX connectors
Net Weight
20.8 g (.7 oz.)
SAFETY PRECAUTIONS
Before using this product, please read and save the enclosed warnings and safety instructions.
WARNING FOR ALL EARPHONES!
Use, clean, and maintain earphones according to manufacturer’s instructions.
SAFETY PRECAUTIONS
The possible results of incorrect use are marked by one of the two symbols—"WARNING" and "CAUTION"—depending on the
imminence of the danger and the severity of the damage.
WARNING: Ignoring these warnings may cause severe injury or death as a result of incorrect op
eration.
CAUTION: Ignoring these cautions may cause moderate injury or property damage as a result of
incorrect operation.
WARNING
If water or other foreign objects enter the inside of the device, fire or electric shock may result.
Do not attempt to modify this product. Doing so could result in personal injury and/or product failure.
Do not use when a failure to hear your surroundings could be dangerous, such as while driving, or when biking, walking,
or jogging where traffic is present and accidents could occur.
Keep this product and its accessories out of reach of children. Handling or use by children may pose a risk of death or se
rious injury. Contains small parts and cords that may pose risk of choking or strangulation.
Prior to inserting the earphone, always recheck the sleeve to make sure it is firmly attached to the nozzle to decrease the
risk of sleeves detaching from the nozzle and becoming lodged in your ear. If a sleeve becomes lodged in your ear, seek
professional medical assistance to remove the sleeve.
Stop using the earphones and consult a medical professional if you experience irritation, excessive wax buildup, or other
discomfort.
