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. Parent talk back. Sound sensitive light display. Nightlight facility with adjustable brightness on baby unit. Intercom. Parent unit adjustable sound sensitivity levels. Parent unit adjustable volume. 3 polyphonic lullabies on baby unit. Rubber key zones on both parent and baby unit. Illuminated key zone on baby unit. Mute function on parent unit. Padded travel bag with draw-string. Parent unit is rechargeable and has a belt clip. Link alert. Low battery indicator and alert. Sound alert. Mains operation via 2 adaptors. Interchangeable mains power adaptors (x2). Parent unit includes 2 x AA rechargeable batteries (included). For portable use, baby unit requires 4 x AA batteries (not included). Parent unit find button on baby unit. Re-charge docking station for parent unit. Complies with EN60, EN61558 and R&TTE Direct.