Feature: 1. Light size and weight, easy to install and disassemble. 2. 3 large capacity cells (not included) to provide energy, can be charged at the same time, energy saving efficient. 3. Mobile APP remote monitoring, support 8 mobile phones to connect to the doorbell, 3 mobile phones simultaneously watch. Specification: The doorbell can be controlled by APP, automatical work model, intelligent and portable. WIFI connect, no wire needs, wide monitor range, PIR motion detection, high definition night vision, safe, reliable and practical. Real-time mobile phone push messages, support two-way calls, photos, recording, caring for your family makes you more secure. Features: Light size and weight, easy to install and disassemble. 3 large capacity cells (not included) to provide energy, can be charged at the same time, energy saving efficient. Mobile APP remote monitoring, support 8 mobile phones to connect to the doorbell, 3 mobile phones simultaneously watch. Mobile instant push messages, support two-way calls, photos, recording. PIR motion detection, passive body infrared sensing, movement monitoring. Equipped with high-definition infrared night vision, open automatically at night, reliable and practical. WiFi connection, no wire, wide monitoring range, high definition of night monitoring. Press the bell to automatically collect, save the video, you can view the visitor record at any time. Built-in advanced main control chip, high performance, low energy consumption. Support 7-day circulation cloud storage, content circulation coverage. Specifications: Color: Silver, Silver&Black, Upgraded Black (optional) Material: Lastics Cell: 3 * lithium battery Lithium Cell (not included) Charge Interface: USB Charge Electricity: Direct Current: 5V-1A Alternating Current: 8-16V Consumed Energy: 12W Voltage: 5V Camera Pixel: 720P Function: Mobile Monitoring, High Definition Night Vision, Automatic Video Recording, Mobile Remote Control Package Weight: 265g / 9.35ounces Package Size: 182 * 100 * 37mm / 7.17 * 3.94 * 1.46in Packing List: 1 * Doorbell 1 * Instruction Book 1 * Install Tool Kit Package List: 1 * Doorbell 1 * Instruction Book 1 * Install Tool Kit