1. Large Blacklist: Our phone display landline has a large blacklist storing 2000 entries, ensuring unwanted calls are blocked. This helps you enjoy a quiet and uninterrupted call experience. 2. Plug and Play: Our phone device features a dual-plug design, allowing it to connect to most landline phones. This ensures you can start using it immediately without complicated setup. 3. Call Blocking: This device can block unwanted calls and provides filtering functions to help protect your personal privacy. This helps you maintain a calm and uninterrupted call experience. 4. Easy to Use: Our landline phone caller ID box is simple to operate. Just press the "Block" button to permanently block incoming calls. This allows you to block unwanted calls quickly and easily. 5. LCD Screen Display: This call interceptor includes an LCD screen for easy operation. The push-button interface ensures you can block unwanted calls quickly. The device is made of high-quality ABS material. Support Cordless Phone: Yes Function: Stores up to 2000 numbers with call filtering Material: ABS Touch Screen: No Caller ID: Yes Note: Product appearance, color, and printed text may vary slightly between batches. These variations do not affect functionality. Color: As shown Package Contents: 1 x Call Blocker 1 x Cable 1 x English Manual Only the items listed above are included; other accessories are not included. Note: Lighting and display settings may cause slight color differences between the image and the actual item. Measurement error is +/- 1-3 cm.