Google Nest Doorbell (battery). Product colour: White, Best uses: Home, International Protection (IP) code: IP54. Megapixel: 1.3 MP, Maximum video resolution: 960 x 1200 pixels, Maximum frame rate: 30 fps. Connectivity technology: Wireless, Wi-Fi standards: 802.11b,802.11g,Wi-Fi 4 (802.11n). Power source type: Battery, AC input frequency: 50/60 Hz, Battery voltage: 3.65 V. Bell width: 2.4 cm, Bell depth: 16 cm, Bell height: 4.6 cm