1、Wide in Frequency: The working frequency is 905-925MHz, and the wireless digital encryption transmission is very safe and reliable. 2、The Two Way Audio: Supports 2 way audio for better monitor and care, the intercom set also enables 10 levels of volume adjustment. 3、For Stable Signal: Ensuring stable signal, the wireless baby monitor allows for a long transmission range up to 300M in open space. 4、Premium Functions: Built in music and night light, the baby sound monitor can be conveniently turned on and off in both direction. 5、A Perfect Present: You can give this baby monitor to your family and friends who has newborns, a present for Christmas, anniversary, etc. Item Type: Baby Monitor Material: Plastic, electronic component. Operating Frequency: ISM 905-925MHz Power: 10dBm Modulation Mode: FSK Spread Spectrum Method: FHHS Audio Coding: ADPCM Modulation Frequency: 180KHz Sensitivity: ≤ -92dBm Battery Type: 3 x 1.2V AAA battery, not included. 2 x Baby Monitor 2 x Power Adapter