Most hearing protection blocks everything — including the music that keeps you going through a long shift. The Howard Leight Sync solves that. It delivers NRR 25 hearing protection while letting you listen to music, podcasts, or audio from any device through the built-in 3.5mm AUX input. No batteries. No volume knob. Just plug in and go.Best For Tradies, construction workers, and manufacturers who want to listen to music safely on the job Home DIY and workshop use Agriculture and outdoor work environments Anyone who finds standard earmuffs too isolating for long wear Mining and industrial environments with low to medium hazardous noise levels How It WorksThe Sync uses patented Air Flow Control Technology™ to deliver high attenuation across all frequencies — including low frequencies that most earmuffs miss — for an NRR 25 / SLC80 31dB Class 5 rating. The advanced acoustical bass chamber enhances audio quality so you don’t need to crank the volume to hear clearly. Volume Management Technology™ caps playback at 82dB to prevent unsafe listening levels even when connected to a device.Key Features NRR 25 / SLC80 31dB Class 5 — meets AS/NZS 1270:2002 3.5mm AUX stereo input — connects to any phone, MP3 player, or audio device Volume Management Technology™ — caps audio at 82dB for safe listening Air Flow Control Technology™ — superior attenuation across all frequencies No batteries required — plug in and go Telescoping height adjustment — stays fixed during use for a personalised fit Soft, breathable ear cushions — comfortable in warm and humid conditions DJ-inspired design — sleek diamond-pattern headband, easy to clean Robust construction — built for tough environments Includes 3.5mm audio cable Compliance AS/NZS 1270:2002 SLC80 31dB — Class 5 (highest protection level) Why Buy From Sleep & Sound? Australian sleep and hearing health specialists Genuine Howard Leight by Honeywell product Fast local shipping across Australia Friendly support from people who understand hearing protection