[Visual Two-Way Intercom] 4.3-inch color display enables clear visual communication with visitors [Extended Battery Life] 1000mAh doorbell battery and 400mAh display battery provide over 3 months of normal use [Outdoor Weatherproofing] IP66-rated waterproof design ensures reliable operation in various weather conditions [One-Touch Recording] Supports up to 128GB TF card for automatic snapshot and video recording capabilities [Night Vision] Built-in camera with 300,000 pixels resolution allows clear visibility even in low-light conditions Specifications: Material: ABS, PCBA, polymer battery, speaker, camera, hardware Display Size: 4.3 inches Camera Resolution: 640 x 480, 300,000 pixels Battery Capacity: Doorbell 1000mAh, Display 400mAh Power Input: 5V?1A Charging Time: 1.5 hours Standby Time: Over 1 year Waterproof Rating: IP66 Storage: Supports up to 128GB external TF card Doorbell Dimensions: 135 x 53.3 x 34 mm (including plastic base) Display Dimensions: 120 x 95 x 17 mm Weight: Doorbell 91g, Display 134g