2.4GHz Wireless Daisy-(Day & Night) (Video & Audio) Infant Nursery Monitor Add-On Security Camera Night Vision (Effective range: 5m), Up to 100m (330ft.) transmission range in open space Power On&Off for the soft lights by touch the flower branch Rechargeable Li-battery in receiver Built-in microphone for audio monitoring Up to 100m (330ft.) transmission range in open space