【Automatic Night Vision】Built-in light sensor automatically activates night vision in the dark, ensuring safety every night 【Instant Photo Capture】When a visitor presses the doorbell, the camera captures a photo instantly. The photo is stored securely in the cloud, allowing you to review messages and photos from the past 3 days 【Customizable Ringtones】Built-in with 38 built-in ringtones. The volume can be adjusted to suit your needs 【Voice Changing Feature】Enhance security when alone at home with the voice-changing function. Easily switch voices to disguise your presence 【Remote Real-Time Monitoring】No matter where you are at the office, waiting at traffic lights, or traveling, you can access the i5 app to monitor your doorbell in real-time 【Family Sharing Capability】Supports sharing with up to 9 family members. Doorbell video messages are pushed to all connected users, allowing the first person who responds to engage in a visual conversation with the visitor Specifications: Charge Interface: type-c Device Dimension: 85*50*26mm(Door bell), 60*44*26mm(Indoor unit) Built-in music: 38 musics Standby: >365 days Charge Time: 1.5 hours