Features:

• Backup power supply
• Works with Panasonic cordless 2.4GHz and 5.8GHz telephones (excluding models prior to 2003 and the KX-TG2000 and KX-TG4000)
• For a 6V base unit, 4 AA batteries are required
• For a 9V base unit, 6 AA batteries are required
• No batteries included
• Do not use rechargeable batteries
• Voltage for your cordless phone will be indicated on the base unit
• Functions as an emergency power source for Panasonic cordless phones in the event of a power failure
• Up to 3 hour talk time
• Up to 5 hour standby time
• Telephone AC adapter plugs directly into the backup unit. The backup unit plugs into the wall
• During a power outage, the backup unit will power the telephone
• 90 Day limited manufacturer's warranty
• Black