The Walker's Razor XV 3.0 Behind Neck BT Hearing Enhancer is non-intrusive neck worn design with flat and no-tangle cables. The Bluetooth version (GWP-BTN-BT) of durable hearing enhancer includes a free control app that allows for complete control of your Razor XV 3.0 from your SmartPhone using Walkers LINK app found in Google play and App Store. This hearing enhancer also comes with hi-gain omnidirectional microphones for clear sound enhancement. SPECIFICATIONS: - Hearing enhancer with retractable digital ear buds for easy use; - Bluetooth connectivity controlled by Walker's Link app found in Google Play and App Store; - HD Walker's in ear buds for wide range audio quality; - 4 frequency modes: Universal, Speech Clarity, Hi-Frequency and Power Boost; - Independent volume control for convenience; - Hi-gain omnidirectional microphones for clear sound enhancement. ABOUT WALKERS HEAR LIKE YOU’VE NEVER HEARD BEFORE For over 25 years Walker’s has developed innovative solutions to provide ear protection for shooting, hunting, and commercial applications. Walker’s line of products is widely considered industry standard for shooting ear protection and safety. With introduction of advanced digital circuitry & nano tech water repellence, Walker’s continues to raise bar and provide best shooting hearing protection.