Sync Stereo Earmuff, 25 dB NRR, Black, Over the Head no-checkout Exceptionally high impact resistance

Sync Stereo Earmuff, 25 dB NRR, Black, Over the Head no checkout Exceptionally high impact resistance Exceptionally high impact resistance and more Duracell High Power Lithium batteries are designed and developed for long lasting quality performance Duracell High Power Lithium batteries provide durable value because they are guaranteed for 10 years in storage Guaranteed for 10 years in Storage: Duracell Lithium Coin batteries are guaranteed for 10 years in storage Volume Management Technology™ manages output volume from portable audio devices at 82 dBA (based on sound output levels no greater than 126mV) Provides ideal protection in most low to medium hazardous noise levels Plugs into most MP3 players mobile phones