Product parameter Product Name: Office Home Telephone Size: 205*162*85 (MM) Features: R key function 3 groups of alarm functions 3 groups of one-key memory function 4 levels of ringtone volume adjustable No recognition result 50 groups of incoming call numbers and collection time Record (8 bits), 15 groups of outgoing calls Number and call time record (8 digits) 16 ringtones to choose Packing list: a telephone, a manual, One curve, one straight line