Libby Horn Tubes Amplified Cordless Phones Includes marker ring on each

Includes marker ring on each tube for marking ear canal depth

Magnification and illumination improve procedural accuracy

It stops when your baby stops making any noise

USB charging cable with AC adapter

It has excellent stability and consistency and makes approximately 60 impressions

Libby Horn Tubes Amplified Cordless Phones Includes marker ring on eachLibby horn tubing uses the horn effect to increase response rate in the high frequency range. Features Tapered tubing based on acoustic horn principles Use with proper damping elements results in smooth wide band frequency response Specs 6 per package Specify size: 3mm or 4mm