The Howard Leight® Sync™ Stereo Earmuff (1030110) is designed for users who want effective hearing protection while safely listening to personal audio devices at work or at home. Unlike traditional stereo earmuffs that sacrifice sound quality for attenuation, the Sync™ earmuff delivers balanced, high‑fidelity stereo sound while maintaining reliable noise reduction in hazardous environments. With a Noise Reduction Rating (NRR) of 25 dB, the Sync™ earmuff helps protect against low to medium hazardous noise levels. Volume Management Technology™ limits audio output to a maximum of 82 dBA, helping prevent overexposure while connected to smartphones, or other audio devices through the integrated 3.5 mm AUX input. No batteries are required-power and volume control are handled directly through the connected device. The earmuff features patented Air Flow Control™ technology, which reduces noise across all frequencies without increasing earcup size or weight.

• 25 dB Noise Reduction Rating (NRR) for protection in low to medium noise environments
• Volume Management Technology™ limits audio output to 82 dBA for safer listening
• Integrated 3.5 mm AUX input jack compatible with most MP3 players and mobile devices
• No batteries required-audio controls managed through the connected device
• High‑fidelity stereo sound with advanced acoustical bass chamber
• Patented Air Flow Control™ technology reduces noise without increasing earmuff size
• Lightweight, padded headband and earcups for all‑day comfort
• Reinforced fork slides for durability and adjustable fit
• Snap‑in ear cushions for easy replacement and maintenance
• Over‑the‑head design, one‑size‑fits‑most
• Meets ANSI S3.19 and applicable OSHA hearing protection requirements