3M™ E-A-R™Classic Corded Earplugs 29dB - Pack of 500 H520A-407-GQ Automatic shut-off after two hours

Automatic shut-off after two hours (If no functions are used)

Lithium ion battery with LED to indicate charge status

Voice menu

Dual-element

Equipped the following functions: volume for the level dependent function

3M™ E-A-R™Classic Corded Earplugs 29dB - Pack of 500 H520A-407-GQ Automatic shut-off after two hours250 pairs per box Comfortable, soft energy absorbing foam offers a low equilibrium pressure Moisture resistant firm foam prevents swelling and the need to refit 3M proprietary slow recovery foam ensures a good custom fit inside most ear canals Reduces noise levels up to 28 dB Fully tested and approved against EN 352 8 Textured surface helps them stay in place with jaw movement over long periods Compatible with 3M E A R One Touch Pro Earplug Dispenser.