Safe, compact design makes this lightweight, portable letter opener perfect for home, office or briefcase. Fully enclosed rotary blades prevent accidental injury and trim neatly without ripping or tearing contents. Ergonomic design conforms to your hand. Handheld electric letter opener automatically activates when envelopes are inserted. Letter opener operates on four AA batteries (sold separately).Safe, compact design makes this lightweight, portable letter opener perfect for home, office or briefcase. Fully enclosed rotary blades prevent accidental injury and trim neatly without ripping or tearing contents. Ergonomic design conforms to your hand. Handheld electric letter opener automatically activates when envelopes are inserted. Letter opener operates on four AA batteries (sold separately).