http://www.gadgettown.com/GSM-Spy-Bug-Listening-Device-Long-Standby.html
This Long Standby GSM Spy Bug Listening Device simply insert a SIM Card into the device, hide it in someone's bag or place it under a table, it'll work anywhere. Call the number and listen to the surroundings. There is no speaker or LED notification when you call so whoever you're monitoring will never know they're bugged.
