Feature: 1. AUTOMATIC RECOGNITION: Corded phone is designed with FSK, DTMF caller ID, which can automatically identify. 2. 12 BIT LCD DISPLAY: Corded telephone has a 12 bit LCD display. 3. CALLER NUMBER: Corded landline records up to 50 groups 8 digits of caller numbers and call times. 4. CALLING NUMBER: Wired telephone records up to 50 groups 8 digits of caller IDs and call duration records. 5. FLASH OFF TIME: Corded home phone optional flash off time 600ms, which can satisfy your kinds of needs. Specification: Item Type: Corded Phone Material: ABS Ringing Test: 25HZ 75V Ringing Level (Spacing 0.5m/1.6ft): Ringing Large Block ≥70dB DTMF Dialing: High Frequency Group Level: -7±3dB Low Frequency Group Level: -9±3dB Frequency Frequency Deviation: ≤±1.5% High and Low Level Difference: 2±1dB Hang Up Leakage Current: Standby ≤ 80μA, Caller ID ≤ 1mA Handle Electro Acoustic Indicators: RLR: -8.6dB (0KM), -8.0dB (5KM) SLR: 16.5dB (0KM), 23.8dB (5KM) STMR: 10.3dB (0KM), 13.5dB (5KM). Package List: 1 x Corded Phone1 x Telephone Line1 x Instruction Manual Note: telephone line