WIRELESS VISUAL INTERCOM: Our wireless visual intercom watch is equipped with a 4.3-inch 2.4-inch IPS screen for clear vision, allowing you to see who is at the door without opening it. It's an intelligent watch for HD video monitoring in your home. LONG BATTERY LIFE: Equipped with an 800mAh polymer battery, the watch can last up to 2 months with 10 door presses per day after a full charge. Note that greater distance consumes more energy. NIGHT VISION & WIDE ANGLE: Features 4 advanced 850NM infrared night vision capabilities, intelligently optimizing night vision mode for clear vision even in complete darkness. It offers a 70-degree field of view, providing a complete view of your doorway. LARGE STORAGE & TWO-WAY INTERCOM: The Sonnet supports SD cards up to 256GB, allowing you to store a large number of video recordings. 2.4G transmission enables internet-free connectivity and supports two-way video intercoms, offering a convenient and secure way to communicate with visitors. EASY INSTALLATION & LOW POWER CONSUMPTION: Wireless and simple to install. It features an integrated speaker and microphone, powered by 2A/DC 5V. It offers ultra-low and long-lasting energy consumption. Please note that the monitor must be connected to an external power source for prolonged use. The integrated battery is intended for temporary use and should not be used for extended periods without external power. Specifications: Display: 4.3 inches Power Information: DC5V/2A Audio Information: Integrated speaker, microphone Operating Humidity: 10% to 90% SD Card: Supports up to 256GB WiFi Mode: 2.4g Viewing Angle: 70 degrees Night Vision Type: Infrared night vision Operating Temperature: -10° ~ 60° Video Processing Speed: 640 x 480 Image Sensor: GC0328 Operating Humidity: 20% -80% RH SD Card: Supports up to 256GB Night Vision Type: Infrared night vision Operating Humidity: 10% -90% Wireless Distance: Open 100m/328ft, indoor 20m/65.6ft Battery Capacity: 800mAh. After a full charge, it can last up to 2 months with 10 door presses per day (note: greater distance consumes more energy). Note: 1. The monitor must be connected to an external power source for prolonged use. 2. The integrated battery is for temporary use only. 3. Do not use for extended periods without an external power source.