The sound is great with auto gain control picking up voice conversation over 5 metres. In louder environments such as the outdoors or restaurants and bars it cuts out background noise listening to its nearest sound only.
This can be set to suit any environment with adjustable setting from 10dB-100dB to avoid unwanted calls. The rechargeable battery lasts 3-5 days on standby and 3-4 hours in constant use.
Small size of only 4.3cm x 2.2cm x 1cm (L x W x H) and weight of only 19g making it easy to wear or hide anywhere. This also operates when connected to a 5v charger or portable battery for constant operation. It also has a basic locater/ tracker feature that provides its last known location using LBS (location based service).
This is GPRS and not GPS and provides approximate location ranging from 50-1000 metre distance. Compatible SIM cards: Standard SIM or Micro/Nano SIM with adapter. Audio monitoring range: About 5m (radius). Stand-by time: 3 days with Voice activation / 5 days without. Work frequency: 900 / 1800 / 1900MHz.
Working temperature: - 40 - 50 Deg. The item "PROFESSIONAL WIRELESS GSM SPY AUDIO LISTENING DEVICE HIDDEN BODY WORN MICROPHONE" is in sale since Friday, September 14, 2018. This item is in the category "Consumer Electronics\Surveillance & Smart Home Electronics\Home Surveillance\Home Surveillance Parts & Accessories\Other Surveillance Parts & Accessories".
The seller is "micronic007" and is located in Winchester. This item can be shipped worldwide.