eufy Security, Wireless Add-on Video Doorbell with 2K Resolution, 2-Way Audio, Simple Self-Installation, HomeBase 2 RequiredBrand: eufy Features: 2. 5x the Clarity: The built in Sony 2K sensor and professional grade lens allow you to view activity in picture perfect resolution. See visitors in sharp detail as they approach your door. Dual Power Options: Half a year of coverage from one charge or non stop power supply via a wired connection. Expanded Field of View: The increased 4: 3 Aspect Ratio ensures you get a head to toe view of anyone who approaches and gives you the