Feature: 1. Applicability And Compatibility: This wired desk phone is compatible with FSK and DTMF. And with 24 different ringtones to choose from. And the hands free and ringtone volume can be adjusted. 2. Multifunctional Wired phone: The wired phone supports predial, redial, correction, delete functions, hands free call function and calculator function, and can also set an alarm clock, which is simple and convenient to use. 3. Energy Saving Phone: This landline phone can be used without installing a battery, which is environmentally friendly. And it can support split line interface, single interface extension line, can be directly used as the host. 4. Anti Skid Design: Two non slip fixing holes, used in a shaking place to reduce movement or falling damage, anti slip mat to reduce desktop friction. The button design is comfortable and convenient for dialing. 5. LCD Display: The fixed telephone has a 16 digit HD LCD screen, and the caller number, date and time are displayed on the same screen. It can record 62 (maximum) incoming and 16 (maximum) outgoing numbers (8 digits). Specification: Item Type: Corded Telephone Material: ABS Model: KX-T2029CID Main Functions: Caller ID, Semi Hands Free, Battery Free, Extension Interface, 24 Ringtones Size: Approx. 210x160x95mm / 8.3x6.3x3.7in (Manual Measurement Allows Errors). Package List: 1 x Telephone 1 x Telephone Receiver 1 x Telephone Line 1 x Handset Cord Note: The color of the phone line is random. You don't need to install the battery to use, you can dial to answer the use.