GSM Listening Audio Bug Surveillance Device Two-Way Auto Answer & Dial Audio Device Listening Sim Card Spy Ear BugQuadband GSM Voice Activate Device Sim Card surveillance Spy Ear Bug MonitorQuad Frequency: 850/900/1800 /1900MHzAll comes with tracking number without extra shipping feeAre your kids safe online?Is your spouse cheating on you?Is your family hiding things behind you?What people actually got in their head?(It's common that some just do not to tell you the truth straight in face)This GSM SPY Device for inspection DEFINITELY can help you get all the answers/FACTS SECRECTLY!Easy to useJust 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.(5-15m range) Insert the sim card to the slot， a red light flashes for one second， it means the device is ready， put the device in a hidden place which you want to surveillance the surroundings， just dial the sim card no.， you can hear the voice around around the bug (5-10m).Other Features: MODEL:charger Quad Frequency: 850/900/1800 /1900MHz (attention:only works with GSM card ，cannot be worked with CDMA card and 3G ) Embed microphone， powerful sound receiving effect Sound activated，(it will call you back when there is a sound) Power input: AC100~250V 50/60Hz Power Output: DC 5V， 400-500mA Microphone range: 5-10 meters 24 hours non-stop power supply. All GSM SIM card compatible Voice activate function on :Stand-by time:3-5 days Voice activate function off :Stand-by time:12-15 days Dimension: 5.3 x 3.8 x 1.7 cm Weight: 40g (Package 160g)Package include: 1 x GSM N9 Surveillance Device1 X Cable1 X User Manual