Walkers Raptor Bone Conducting Hearing Enhancers 33 dB Grey. Walker's introduces the RAPTOR a radical new approach to hearing enhancement & protection. Utilizing bone-conduction technology to amplify ambient sounds by transmitting sound waves through bones in the head to the inner ear rather than through the ear canals. Used purely as an enhancement device Raptor delivers unparalleled comfort with nothing covering or inserted into the ear canal. Pair it up with your choice foam or custom plugs and the Raptor provides hearing protection through Walker's legendary SAC (Sound Activated Compression) combined with the plugs NRR Rating. A combination that can't be beaten. Specifications for Walkers Raptor Bone Conducting Hearing Enhancers: Manufacturer: Walkers NRR: 33 dB Color: Grey Battery Type: Lithium Ion Quantity: 1 Size: One Size Condition: New Included Accessories: Standard Age Group: Adults Features of Walkers Raptor Bone Conducting Hearing Enhancers: Llows For High NRR Using Standard Ear Plugs; User Hears Ambient Sound Via Bone Conduction; Listen To Music Or Take Phone Calls; Omnidirectional Microphones; Volume Control; Sound Activated Compression; Patent Pending; Battery - Rechargeable Lithium Battery; App Supported - Yes Package Contents: Walkers Raptor Bone Conducting Hearing Enhancers Micro Usb Charging Cable Walkers GWP-BCON: Raptor Bone Conducting Hearing Enhancers 33 dB Grey