One-way monitoring: 

Parent can listen to baby, but cannot talk 

Long-distance : Wide range , can be used between 1-4 floors 

Night light: Parent can open the night light for the baby . 

Built-in battery in parent unit: 

Rechargeable battery for 3-4 hours, which can be used continuously for about 10 hours 

Ultra-low radiation: 

Radiation is LOW that it can be ignored 

Indicator: When baby cry , the light on parent unit will flash to remind you