3X Digital Zoom Press the zoom button to zoom in on the screen image. Choose from three magnification levels (1X/2X/3X switching on cycle) You could play built-in lullaby or use the two-way conversation intercom function to comfort your babies whenever you want. Two-way conversation back You can talk to your baby from a long distance without running back. Auto night vision Allows you to take care of your babies in the dark, keeping an eye on the baby all night. 8 Built-in lullabies Built-in sleep cures can help parents comfort their baby to fall asleep. Intelligent VOX mode In VOX mode, the screen sleeps to save energy and wakes up when the camera microphone hears a sound. Press VOX mode or use the VOX submenu to enable or disable this mode. Temperature monitoring With temperature sensor, Supervise baby room temperature all day, Help take care of the health of your baby. Up to 24 hours of battery life (in VOX mode) The monitor has an internal battery. Works with battery or power charger. The camera does not include a battery. It only works on the power charger. Multi-language support English/French/Spanish/Portuguese/Italian/German/Turkey/Russian. Specification General: RF Frequency: 2400 ~ 2483 MHz Transmission range: up to 1000 ft in open field Spread spectrum: FHSS modulation mode: GFSK Operating temperature: 14~122Fahrenheit/-10~+45Celsius Operating humidity: