Choose your preferred security setup with ENER-J's Flexi Wireless or Wired Video Doorbell. No Monthly Fees & No Hub Needed. Get instant alerts on your smartphone, wherever you are, as soon as anyone rings the doorbell. This smart doorbell offers a unique square viewing angle and a wide 110-degree field of view, ensuring you see visitors from head to toe or spot packages on the ground. Enjoy the flexibility of dual-power options - either use the built-in rechargeable battery or connect it to existing wiring for continuous power. The doorbell also features a siren and 2-way audio for enhanced security, enabling you to deter intruders and communicate with visitors. With 1080p HD video and crisp night vision, never miss a moment with instant notifications for doorbell presses and motion detection. The larger rechargeable battery provides up to 120 days of power for added convenience. It also comes with an indoor USB chime which can be plugged into any USB socket. Unique Viewing Angle: Exp