The Ring Doorbell 4 is a smart doorbell offering advanced security features. The Pre-Roll video preview feature allows you to see footage of visitors before they ring the doorbell★ Purchased from (in Japan): Major electronics retailer Original price at purchase: ¥23,980 【Features】 This model is easy to install and connects to your smartphone via Wi-Fi. You can view real-time video and receive notifications. 【Package Contents】 Includes the main unit, installation kit, and instructions, allowing you to start using it immediately. - Brand: Ring - Model: Doorbell 4 - Features: With Pre-Roll video preview - Package Contents: Doorbell unit, installation kit, instructions - Language: Japanese Amazon B09HSNXH5P Ring Video Doorbell 4 Ring Video Doorbell 4 Amazon Sets Amazon (Amazon) Intercom Intercom Entrance door camera, entrance security Doorbell camera, smart doorbell Entrance intercom security, entrance camera, door with monitor, home security, home security measures, entrance security camera, home security system, outdoor security camera, smart security camera, surveillance camera set, remote surveillance camera, Wi-Fi security camera, security camera Ring plus Amazon Ring Doorbell 2 Ring Doorbell 3 Ring Video Doorbell Pro Google Security doorbell, security camera, remote monitoring Entrance security measures, security enhancement items Night vision compatible camera, smart doorbell Wireless 1080p camera, night vision, two-way communication possible, home surveillance camera, network camera, surveillance camera set, easy-to-install doorbell 23-58-48-0083698369