Frequency - 2.4 GHz, Specific Channel Numbers - 90 channels, Number of Lines - 1 line, Security Code - Over 1.0 million codes Power Source : Base Unit - AC adapter, Handset - Ni-MH battery, Charger - AC adapter Caller ID with 50-Name 1 & Number Call Log 2 Any Key Answer, Handset Locator (Base Unit) 5-Hour Talk Time, 7-Hour Charge Time, Wall Mountable (Base Unit)