Solid Sound Picking up Amplifier Wall Listening Earthquake Building Landslide Search and Rescue Instrument Wall Listening Device HY929 Player Version (Recorded Edition) (standard edition)

Description

🎧 Unlock the unseen conversations—because knowing is power!

The Solid Sound HY929 Player Version is a highly sensitive wall listening device capable of amplifying audio vibrations up to 20,000 times. It penetrates multiple materials including cement, steel, and wood, making it ideal for search and rescue operations or professional surveillance. With an adjustable sensitivity dial and no battery requirement, it offers easy, precise, and portable audio monitoring for both professionals and consumers.