The Ring Doorbell 4 is a smart doorbell that offers advanced security features. The Pre-Roll video preview feature allows you to see footage of visitors before they ring the doorbell. Original retail 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】 The package 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 Ring Doorbell4 RingDoorbell4 Ring Doorbell Amazon Ring AmazonRing Smart Doorbell Video Doorbell Wireless Doorbell Doorbell Camera Camera Doorbell Smart Intercom Video Intercom Security Camera Entrance Camera Outdoor Camera Surveillance Camera Monitoring Camera Crime Prevention Crime Prevention Measures Security Goods Home Security Smart Security Entrance Security Absence Measures Absence Management Package Delivery Measures Delivery Confirmation Package Delivery Placement Measures Visitor Confirmation Visitor Verification Absence Verification Theft Prevention Crime Prevention Enhancement Safety WiFi Doorbell Wi-Fi Compatible Wireless Doorbell Smartphone Integration App Integration Real-time Notifications Motion Detection Body Detection Human Sensor Two-way Audio Voice Call Conversation Possible Night Vision Night Vision Function Night Recording HD Quality 1080p High Definition Wide Angle Lens Recording Compatible Cloud Recording History Confirmation Alexa Compatible Alexa Compatible Alexa Integration Amazon Compatible IoT IoT Devices Smart Home Smart Appliances Latest Appliances Convenient Appliances Gadget Gadget Lover Crime Prevention Awareness Entrance Management Outdoor Installation For Entrance Detached House Apartment Rental Property Compatible No Construction Required Easy Installation Battery Operated Rechargeable Battery Operated Work From Home Remote Work Living Alone Working Parents Childcare Households Elderly Care Pet Monitoring Family Monitoring Popular Product Standard Model Best Seller Trending Topic