Specification:Material: ABS Plastic, Electronic ComponentColor: Silver, BlackItem: Video DoorbellSize: 144×74.5×32.3mmResolution: 1280×720Field of Angle View: 166°Battery: 2 x 18650 Batteries(Not Included)Wireless Network: 802.11 B/G/NWireless Network Security: WPS EncryptionWireless Connection: One-button