ANC Adjustable Noise Control Dual Channel Sweep FM and AM Adjustable Scanning Sweep Speed for Each Channel ATDD Automatic Temperature Deviation Detection alerts of 5F/ Temperature Change Each Channel Scannable both Forward or Backward power_source_type 9V Alkaline Battery This is a deluxe version of the famous SB11 Spirit Box. It has all the same features as the regular SB11 but also has the added ANC feature, that is Adjustable Noise Control. This feature dramatically reduces the unwanted noise during station scanning so that the user can much more clearly distinguish possible messages from the other side. It comes with pre-set settings for the noise control but through the buttons on the back of the SB11-ANC the user can tweak the noise control to the level of his or her liking. There is + and - control buttons for each channel - for both the FM and AM channel. Like the original SB11 one can scan both channels at the same time and choose directions independently for the scanning of each channel - forward and backward. Scanning speeds can be adjusted to several different levels from slow all the way up to very fast. The Spirit Box also has ATDD - Automatic Temperature Deviation Detection. This is an alert that will notify the user if the temperature increases or decreases from the baseline ambient temperature by more than 5F. Such a temperature change could indicate paranormal activity. The volume can be controlled independently for each of the two channels. There is also a mute button. Some users prefer to not use an antenna and therefore there is an on/off button for the antenna. There is also a built in night vision friendly red flashlight at the top of the SB11. There are two audio output ports so that the SB11 can be plugged in to a recording device, amplifier, speaker ,or a portal such as the the Portal V5 by GHE which has 2 input jacks which is especially great for a SB11 so that both the AM and FM channel can be run simultaneously.