New F999B Super Sensitive Listen Thru-wall Contact/probe Microphone Amplifier System (Warranty period of five years)

Q: how come i was sent a 929 when a f999b is what i should have gotten, all over this page says f999b,invoice says f999b, it dosnt seem fair

As some one who just got fired from Amazon I think you get a refund and buy it at any place as long as its not Amazon.

Q: How far can you be from the microphone and still hear?

Never worked, and the cost to send it back, and paperwork, is understandably why they can sell defective products, and not have to worry about refunds, or merchandise returns. Totally Dissatisfied

Product ID: 40506837

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Details

Brand
Kstpower
Model Name
F999B
Connectivity Technology
Auxiliary
Connector Type
3.5 mm Jack
Special Feature
3.5mm jack
Compatible Devices
['Smartphone'

⏳24h Monitoring

🎧3.5mm Output

🔊20000x Gain

Description

👂 Hear What Others Can't!

🕒 ALL DAY LISTENING - Stay tuned in with continuous monitoring for up to 24 hours.
🔋 LONG LASTING POWER - Equipped with a robust 250mA lithium battery for extended use.
🔊 MULTI CHANNEL MAGIC - Enjoy crystal-clear audio across four distinct channels for a tailored listening experience.
🔍 UNMATCHED SENSITIVITY - Experience sound like never before with a staggering 20000x amplification!
🌐 VERSATILE COMPATIBILITY - Connect effortlessly to a range of devices including smartphones, laptops, and more.

The New F999B Super Sensitive Listen Thru-wall Contact/probe Microphone Amplifier System is a cutting-edge audio device designed for discreet listening through various surfaces. With a remarkable 20000x gain amplification, it allows for continuous monitoring for up to 24 hours. This versatile system is compatible with multiple devices and features a 3.5mm output for easy connectivity. Its compact design and powerful battery make it an essential tool for professionals seeking high-quality audio capture.

Specifications

Power Source	Battery Powered
Signal-to-Noise Ratio	70 dB
Audible Noise	70 dB
Number of Channels	4
Polar Pattern	Omnidirectional
Audio Sensitivity	70 dB
Microphone Form Factor	Mini
Connectivity Technology	Auxiliary
Connector Type	3.5 mm Jack
Special Features	3.5mm jack
Compatible Devices	['Smartphone', 'Laptop', 'Personal Computer', 'Tablet', 'Camera', 'Headphone', 'Radio', 'Speaker', 'Karaoke Machine', 'Amplifier', 'Gaming Console']
Item Dimensions	9.06 x 7.09 x 2.76 inches
Material Type	Wood
Color	silver

Have a Question? See What Others Asked

can this be used to listed to heartbeat like a stethescope?

can it record?

how come i was sent a 929 when a f999b is what i should have gotten, all over this page says f999b,invoice says f999b, it dosnt seem fair

How far can you be from the microphone and still hear?

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TrustScore 4.5 | 7,300+ reviews

Ayesha M.

The product exactly matches the description. Very satisfied with my purchase.

5 days ago

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Great price for an authentic product. Fast international shipping too!

3 weeks ago

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