Feature: 1. Efficient and Safe: Utilizing wireless technology, the monitor continuously monitors the baby, ensuring their safety at all times. 2. Two Way Communication: Allows convenient real time communication between parents and the baby, enhancing parent child interaction and bonding. 3. Multifunctional Night Light: Doubles as a night light, providing a comfortable sleep environment with a soft and gentle glow. 4. Remote Operation: Allows remote monitoring and control through a smartphone app, enabling parents to keep an eye on the baby anytime and anywhere. 5. High Sound Quality: Offers high stability sound transmission, delivering real time sound of the baby, providing parents with peace of mind. Specification: Item Type: Baby MonitorMaterial: ABS + Electronic Components Main Unit Battery Type: Lithium Battery (included) Main Unit Battery Capacity: 1000mAh Subunits do not contain batteriesVoltage: 100-240V Sound Monitor Size (Main Unit): Approx. 10.5 x 7 x 5cm / 4.1 x 2.8 x 2 inches Sound Monitor Siz (Sub Unit): Approx. 10.5 x 7 x 5cm / 4.1 x 2.8 x 2 inches For best results, charge the main unit before use. After initial charging, charge normally as required.The main unit can be operated normally with the power adapter already plugged into the unit with the battery installed. 1. Plug the adapter into a power outlet. Connect the small end of the USB power cord to the DC jack of the main unit. The power LED indicator will be lit in red. 2. Press and hold the power On/Off button for 2 seconds to turn on the main unit. The power LED indicator will illuminate green to indicate 3. Once both the sub unit and main unit are turned on. The main unit will transmit the sound captured by the sub unit. 4. If there is no link or you are out of range, the sound will turn off and the main unit will beep rapidly after failing to re establish the link. Move the main unit closer to the sub unit until the link is re established. 5. Press and hold the power button to turn off the main unit. . Package List: 2 x Baby Sound Monitor2 x USB Cable 1 x Plug 1 x User Manual