Spy ear piece receiver with the loudest sound

Description

UHF spy in-ear receiver / ear piece with the loudest sound !

Ultra-secret one way UHF FM spy ear piece / in-ear receiver, this is total invisible in the ear, used for covert communications in noisy environment, like entertainment, stage shows, spectacles, outdoor events

Key benefits:

• Loudest sound spy micro earpiece in-ear Receiver ever made, that enters completely in the ear canal, without anyone to see it.
• The working distance is 200 meters in open field.
• The spy micro ear piece, MRF400-D in-ear receiver, has a black coat, for a better invisibility in the ear canal – the perfect camouflage, imitating the darkness in the ear.
• No neck-loop needed! No accessory on your body!
• Undetectable for any detector!
• Non jamming by any phone jammers!
• No interference with any electromagnetic fields or dynamic microphones!
• No billing for your conversations
• Instant communication, without waiting calls or conditioned by the phone network
• Secret communication! your conversation will not be taped by phone operators and no leads to your location

What is it for:
This covert communication system can be used in covert communication within loud environment, like stage shows, spectacles, performances, scenes.

How it works:
If you need to have a covert communication, all you have to do, is to put the spy earpiece into your ear canal, in order to hear your partner. Your partner can be at a distance of up
to 200 meters in open field or less (in a building area). It doesn’t need any wires or accessories on the body, making it a champ of all spy ear pieces on the market.

Technical specification for MRF400-D spy Micro Ear piece UHF FM Receiver:

• Dimensions: 15 x 6 x 6 mm
• Receiver mod: narrow-band RF receiver
• Frequency: fixed UHF FM, crystal quartz controlled
• Audio response: 200 Hz – ~4500 Hz
• Audio signal output: 100 dB
• Noise filter: soft squelch
• Sensitivity: SINAD 17 dB @ E=2mV/m
• Channel selectivity: 49 dB (at 200 kHz channel spacing)
• Antenna: magnetic, integrated
• Spurious emissions: below – 51 dBm ERP
• Distortion: 5% (depends on the volume )
• Weight: 1.5 g (with battery)
• Battery autonomy: operational time up to 48 hours
• Current consumption: 2.4 mA
• Type of battery: zinc air A312
• Working distance: 200 m, in open space
• The MRF400-D spy micro earpiece UHF FM receiver is being delivered with 1 battery.