Made in the UK with improved battery, microphone and signal reception enhancement. It has no echo and clearly hears conversation over a large area. It is possible to hear conversation from adjoining rooms with open door or clear space. This model is the real thing and not to be compared with China products. PLEASE NOTE - This is a wireless listening device with SIM card inserted AND audio sound recorder with MicroSD card inserted.
You will require a SIM and memory card to operate with features of this device. It does not need a memory card to operate the wireless listening device only and does require both cards to operate recording feature. The standard is 3-5 day standby and 3-5 hours use time.Long life is 14 day standby and 12 hours use time. Ultra long life is 30 day standby and 24 hour use time. All are rechargeable and take 2-24 hours to fully recharge. It does not include a charger and requires 5V / 1A minimum to charge battery. Totally discreet and impossible to know it is a listening device as nothing is visible on outside. To first set up and operate the device you will need to open up the calculator to install sim card (not included).
This is relatively simple, the calculator is held together with 4 screws and require's a small screwdriver. Care must be taken when carrying this out and important to observe and follow the instructions included. Once sim card is inserted the listening device turns on and auto connects to mobile network.
Listen in on conversations up to 7 metres away from calculator. Other features included with this device are sound activated call back and built in sound recorder. If a sound its heard near the calculator it calls your mobile for you to listen. It can call you or send text notifications whenever sound is heard. This also has another very good feature that no other offers - built in sound recorder.
You can insert a SD card (not included) inside the calculator and record hundreds of hours of high quality audio. You will need to retrieve the memory card to listen to recordings. Office - standard with 3 day standby / 5 hours use time. Office - Long life with 14 day standby / 12 hour use time. Office - Ultra life with 30 day standby / 24 hours use time.
GSM band module: 900MHZ, 1800MHZ. Microphone Range: 5-7 metres (Radius).
Charger power: USB 5V / 1A. Dimensions: 200mm x160mm x 50mm. 1 x Calculator GSM listening device.The item "GSM SPY BUG AUDIO LISTENING DEVICE in OFFICE CALCULATOR VOICE ACTIVATED CALLBACK" is in sale since Thursday, October 25, 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.