The HD•3 High-Definition, Noise-Isolating Headset combines HD•5 Safety Earphones with an in-line microphone for communication by smartphone. Both the HD•3 and the HD•5 Earphones are engineered for safe listening while providing exceptional sound quality for workers who listen to music or other audio content on the job. Use of HD•5 Earphones and the HD•3 Headset – even at maximum volume on portable players or smartphones – is within OSHA permissible exposure limits.
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