Digital DECT technology with Hi Definition sound (Hi-dS). Digital sound clarity with zero interference. Portable parent and baby unit. 300m range outdoors and 50m indoors in ideal conditions. 120 Channels with auto selection of optimal channels. Out of range alert. Link alert. Parent talk back. Intercom. Backlit black and white dot matrix LCD display. Room temperature monitor. Parent voice recording on baby unit. Torch on parent unit. Timer/alerts on parent unit. Multiple polyphonic lullabies. Fully adjustable volume and sensitivity. Sound sensitive lights. Full remote operation via parent unit menu system. Nightlight facility with adjustable brightness on baby unit. Sound and visual alerts. Padded travel bag with draw string. Illuminated rubber key zones on both parent and baby unit. Mute function on parent unit. Vibrating alert on parent unit. Low battery indicator and alert. Parent unit includes 2 x AA rechargeable batteries (included). Baby unit requires 4 x AA batteries for portable use (not included). Interchangeable mains power adaptors (x2). Auxiliary input to plug in mp3 player.