Description:This two way GSM audio spy device calls you when it detects sounds around its vicinity. How awesome is that? Simply insert a GSM SIM card and program it to your desired phone number for call back and now you're in the spy businessTrying to find out the truth about what's being said behind your back? Now you can from a distance. You can even place several of these spy audio devices and set them up at your desired locations like the bedroom, living room, conference room or office. Just insert a SIM card into the audio spy device and your bug is active and ready for actionThis two-way audio spy device comes with two amazing functions:(1) Make a call to the audio device and you can instantly listen in to conversationsThe built-in microphone works up to a 7 meter radius, so set this bug up wherever you want(2) Allows the spy audio device to call you when it hears people talkingThis feature makes it much more advanced than other GSM audio bugs on the market today.Hot spots:Hidden Audio Spy GadgetAuto Dialing optioTri-Band GSM Audio Spy DeviceProduct NotesWhen it detects sound, the spy bug will call your cell phoneYou can recharge the spy audio device by connecting the USB charger cable to the power chargerThis product is being sold as an investigative tools for law enforcement or licensed investigators. Anyone else ordering this device should only be ordering it as a simple toy since MANY COUNTRIES STRICTLY PROHIBIT OWNERSHIP OF SPY DEVICESImportant Note: You are solely responsible for finding out whether this product is legal to import and/or use in your country. We will send you the products you order and cannot accept any liability for customs issues or any implications of your ownership or usage of this device.Specifications:Primary Function: Tri-band GSM Two-Way Audio Spy DeviceMaterials: Molded PlasticColor: BlackGSM Frequency Compatibility: Tri-band (850MHz,900MHz, 1800MHz, 1900MHz)Microphone Range: 5-7 meter radiusPower: Built In 200 mAh Rechargeable Li-ion BatteryWorking Time: 5 hourVoice Control On: 3-5 daysVoice Control Off: 12-15 daysDimensions: 4.3x 3.2 x 1.4(cm)Package Included:1x Two-Way Audio Spy Device1x USB Cable1x User Manual(Chinese and English)