Eufy Video Doorbell C31 with 32GB Micro SD Card - see who is at your door from anywhere. SEE EVERY VISITOR See who is at your front door in Full HD and chat with them using two-way audio if you're away. You can also store footage of your visitors on the included microSD card. You can store footage on the included microSD card or back-up to the cloud (subscription required). VOICE ACTIVATION The eufy Video Doorbell C31 includes human and motion detection. It also works with voice assistants such as Alexa or Google Assistant, so you use your voice to respond to a ring. Also compatible with eufy's HomeBase 3 and Minibase Chime for extra functionality. USE BATTERY OR WIRED The quick-release battery is easily be swapped over or recharged. Or you can hardwire the eufy Video Doorbell C31 for 24/7 recording. Depth: 14.8 CM No Monthly Fee 2K Full HD: 2K clarity reveals more details. Get clear and detailed visuals of your doorstep and anyone who drops by 24x7 Recording: When wired, doorbell supports 24x7 video recording 4s Pre-roll: When wired, doorbell supports pre-recording, events are more complete Battery or Wired, Dual mode: Suitable for all installation scenarios Built in AI: Human and Motion Detection Removeable battery: easily remove the battery for charging Comes with 32GB Micro SD card Google Assistant and Alexa compatible Local Security putting your data in your control Height: 3.12 CM Width: 5.3 CM