Feature: 1. Two-Way Talk Back: built-in microphone and speaker for clear two-way audio conversations, enables you to hear your and talk to your as well. Adopt FHSS, Anti-interference and sound clarity. Long distance transmission 200-300 meters in the open field. 2. VOX Function: under VOX mode, it automatically puts the transmitter in sleep mode to save battery. It reactivates automatically when it detects noise in the \u0027s room. 3. A soothing night light on the unit gently illuminates a dark night. Both the parent unit and unit allow you to turn on or off the nightlight on the unit. 4. Built-in lullabies to comfort your or help her/him fall asleep. Both the parent unit and unit allow you to play music. 5. Dual power supply mode, by-charger, or 3pcs AAA dry battery power supply (Not including). Specification: Features: Two-Way Talk Back: built-in microphone and speaker for clear two-way audio conversations, enables you to hear your and talk to your as well. Adopt FHSS, Anti-interference, and sound clarity. Long-distance transmission 200-300 meters in the open field. VOX Function: under VOX mode, it automatically puts the transmitter in sleep mode to save battery. It reactivates automatically when it detects noise in the 's room. A soothing night light on the unit gently illuminates a dark night. Both the parent unit and unit allow you to turn on or off the nightlight on the unit. Built-in lullabies to comfort your or help her/him fall asleep. Both the parent unit and unit allow you to play music. Dual power supply mode, by-charger, or 3pcs AAA dry battery power supply (Not including). Specifications: Material: ABS Color: White Receiver sensitivity: <=-92dBm Transmission distance: 200-300 meters(in the open field) Operating temperature: 0℃～50℃ Power supply mode: by-charger or 3pcs AAA dry battery(Not including) Product weight: 159g Product size: 9*7*2.5cm Package weight: 417g Package size: 22*13*6cm Package list: 1*Transmitter 1*Receiver 2*Power adapter 1*User manual Package List: 1*Transmitter 1*Receiver 2*Power adapter 1*User manual