TWO WAY INTERCOM: With 2.4GHz digital signal, and built in microphone and speaker, this audio monitor for children can help you to talk to your baby from a distance without running back. NOISE DETECTION: When the noise in the baby room is below 40db for more than 20 seconds, voice will be enabled and the smart monitor will cancel the slight background noise, until the noise exceeds 40db, the monitor will wake up and it will let you know exactly when your baby makes any sound. BATTERY LIFE: The built-in lithium battery in the baby care monitoring device has a capacity of 500mAh, and the standby time is up to 20 hours, and the battery life is . NIGHT LIGHT: This smart audio baby monitor has a night light, which can be controlled remotely, making it more practical and convenient to use. WIRELESS TRANSMISSION: Digital signal transmission, stable without interference, digital signal encrypted transmission, good security. Simply double click the power button to tum on /off the VOX mode, and it is also easy to operate for the baby. The built-in lithium battery in the baby care monitoring device has a capacity of 500mAh, the standby time is up to 20 hours and helps you to keep the baby care all day around. 2 x Sound Monitor 2 x USB Cable 1 x Plug 1 x Instruction Manual Helps you to keep in touch with your baby from another room or even from the yard. Ideal for traveling with 3 charging ways. Easy Control: Long Standby Time: Packages Includes All you need: TWO WAY INTERCOM: With 2 4GHz digital signal, and built in microphone and speaker, this audio monitor for children can help you to talk to your baby from a distance without running back NOISE DETECTION: When the noise in the baby room is below 40db for more than 20 seconds, voice will be enabled and the smart monitor will cancel the slight background noise, until the noise exceeds 40db, the monitor will wake up and it will let you know exactly when your baby makes any sound BATTERY LIFE: The built-in lithium battery in the baby care monitoring device has a capacity of 500mAh, and the standby time is up to 20 hours, and the battery life is