3M™ SecureFit™ 3700 BSF3701XSGAF-BLU-EU Overspectacles - Blue Temples, Brow Guard, Scotchgard™ Clear Lens - Single Unit Category_Best4Systems/Cisco Telephones/Cisco 8800 IP Series Expandable: up to 3x Yealink

Expandable: up to 3x Yealink EXP50 DSS key expansion modules

unique combination of liquid and foam for best seal

HD voice and FNR (Flexible Noise Reduction)

For use with current program of welding helmets and face shields from 3M and 3M Adflo Powered Air Respirator or 3M Versaflo Supplied Air Regulator V-500E

3M™ SecureFit™ 3700 BSF3701XSGAF-BLU-EU Overspectacles - Blue Temples, Brow Guard, Scotchgard™ Clear Lens - Single Unit Category_Best4Systems/Cisco Telephones/Cisco 8800 IP Series Expandable: up to 3x Yealink3M SecureFit 3700 BSF3701XSGAF BLU EU Blue Temples, Brow Guard, Scotchgard Clear Lens Adjustable Ratchet Temples PDT (Pressure Diffusion Temple) Technology helps diffuse pressure over the ear for a comfortable and secure fit Scotchgard Anti Fog Coating (up to 25 washings with water) Polycarbonate Lenses absorb 999% of UVA and UVB rays Meets the requirements of EN166 2001 Standard as an Impact Rated Spectacle Contoured brow guard rests comfortably