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Keep track of the phone calls made in your office or home with the new Phone Manager Plus. This nifty device does not only offer the traditional benefits of Caller ID, it records other information such as outgoing call details as well. The Phone Manager Plus is able to store the call duration and time the call is made, so you can keep tabs on those whom you suspect are wasting their time in the office with idle chatter. Keep this nifty device hidden away from the view of your workers and family members as the Phone Manager Plus is able to perform all those by virtue of being plugged into any available phone jack. Its built-in memory is more than enough to record 2,00 calls, and a trio of AAA batteries is enough to power the device  for up to 3 months before running out of juice. The Phone Manager Plus is available for $46.74.

Pros : Keeps track of incoming and outgoing calls including the duration
Cons : None

Phone Manager Plus Source