Wide range of sightWith a 65° viewing angle, it has a wide visual range and captures a more complete picture, which is reliable and practical. Two-way intercomWIFI connection, no need for wires, realize two-way intercom between doorbell and mobile phone. When someone rings the doorbell, you can use your mobile phone video call to chat with him and easily respond to visiting guests. You can also take photos, record audio, check visitor records at any time, and take care of your family to make you safer. Disassembly-free cyclic chargingBuilt-in 800MAH lithium-ion high-capacity battery, normal use for more than 6 months, charging time only 1.5 hours, no need to charge frequently.