Package Included:1x GSM N9 Surveillance Device1x USB Cable1x Power Charger1x User ManualFeatures:Just insert a GSM SIM card into the slot and put the audio bug at hidden place， then dial the card number to monitor your target， you will hear the sound arround the bug Make a call to the audio device and you can instantly listen in to conversations， the built-in microphone receiving range up to 10 meterGSM voice/ Audio monitor Bug Built-in batteryGSM bug with sound activation function ( insert the GSM SIM card) GSMOperating Frequency: 900MHZ， 1800MHZ， 1900MHZVoice activation， you can call back your phone automatically when the sound arround it up to 45DBYou can send message command or cancel voice activation function by easy SMS "1111" or "0000" onlyStandby Time: 3-5 days (If Acoustic Alarm function Off， standby time: 12-15 days)SIM card must be unlock from pin number (otherwise it cannot works with the bug deivce)Dimensions: Approx. 4.3x3.2x1.4cm/ 1.69x1.26x0.55"Color: Black