Bestbuy offers Eufy Security - Add-on eufyCam 3C Wireless 4K Camera - White for $99.99 (orig. $179.99) with free shipping.

Product Description:
Enhance safety in your home with this eufyCam 3C security camera. The night vision capability lets you see clearly in dark conditions, while the Full HD resolution captures detailed videos. This white eufyCam 3C security camera comes with mounting hardware for hassle-free installation, and the IP67-rated construction allows for safe outdoor use. The add-on camera requires eufy Security HomeBase 2 to operate. The add-on camera will not function on its own. 

• See 4K Detail Day and Night
  Keep an eye on your property with AI powered vigilance. The eufyCam 3C system delivers expansive security capabilities, day and night, in crisp, clear, full-color.
• BionicMind AI Empowers Your Security
  See the true potential of your security with BionicMind providing facial recognition that differentiates between family and strangers with self-learning AI.
• Put Yourself in Control
  Feel at ease conveniently controlling eufyCam 3C Add-on with voice activation via Alexa and the Google Assistant, and clear two-way audio. You can even set activity zones to avoid false alarms.
• 180 Days of Security From 1 Charge
  Enjoy up to 180 days of wireless security from a single charge.
• Powerful night vision up to 25'
  Allows you to monitor your home or business, even in dim lighting, automatically switching the picture to black-and-white in low-light conditions.