Material: ABS - Brand: N/A - Model: 3502 - Color: Black + Silver - Quantity: 1 - Power Supply: 3 x AA batteries (not included) - Voice Decibels: 60-70db - Battery Type: AA - 3.5" LCD monitor - 300KP monitoring camera - Resolution: 320 x 240 - Peephole barrel: 12mm - Door thickness: 42~72mm - Built-in 4GB memory card can shot 100 photos - Easy and safe operation - "Do not disturb (DND)" function: At "DND" state anyone presses call button indoor display have no sound - Helps you observe the conditions outside at a glance as well as identifying visitors to decide whether or not to answer the door - Packing list: - 1 x Doorbell - 1 x Clip - 1 x Peephole lens - 1 x peephole barrel - 1 x English manual