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Telephones / VoIP > 
Cordless Phones > 
Panasonic > 
Item#: 9SIA24G1GC2087

Panasonic KX-TG6643B 1.9 GHz Digital DECT 6.0 3X Handsets Cordless Phones Integrated Answering Machine

  • Intelligent eco mode
  • Power back-up operation
  • Talking caller ID
  • Tona equalizer
  • Reversible handset design
  • Hands-free speakerphone on base & handset
  • Up to 4-way conference capability
  • Answering mac
  • Pin It
  • Email this page
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Learn more about the Panasonic KX-TG6643B


Body Color


Frequency Band
1.9 GHz
Digital / Analog
Transmission Technology
DECT 6.0
Integrated Answering Machine
Expandable Handsets Supported
Multiline Operation Capability
1-line Operation
Conference Call Capability
Up to 4-Way (H/S-H/S-H/S-LINE)
Handset to Handset/Handset to Base
Caller ID
Talking Caller ID
Volume Control
Talk Volume(Handset): 4-step
Speakerphone Volume(Handset): 6-step
Ringer Control
6-step + OFF (Handset/Base)
Ring Tones
10 (5+5) (Tone+Melody)

Additional Features

Additional Features
60 Channels
Battery Life (Talk): 13 Hours
Battery Life (Standby): 11 days
Charge Time: 7 hours
Backlit Keypad
Hold/Soft Key
Belt Clip
Mute/Flash Buttons
Menu Operation
Silent Mode
Auto Talk

Phone Memory

Caller ID Memory
Phone Directory Memory

Answering System

Answering System Type


Display Features
1.8-inch Full Dot Mono 103 x 65 pixels
White LCD Backlit


Battery Type
NiMH Battery
Battery Size
2 x AAA batteries
Headset Jack
Placing / Mounting
Base Dimensions H x W x D (in.): 5.4 x 6.4 x 7.2
Handset Dimensions H x W x D (in): 6.8 x 1.9 x 1.3
Charger Dimensions H x W x D (in.): 1.7 x 2.9 x 3.1
Base Weight (lbs.): 0.82
Handset Weight (lbs.): 0.31
Charger Weight (lbs.): 0.11

Manufacturer Warranty

1 years limited
1 years limited

Quick Info


  • Limited Warranty period (parts): 1 year
  • Limited Warranty period (labor): 1 year

Customer Reviews of the Panasonic KX-TG6643B

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  • VINAY B.
  • 1/29/2014 4:35:09 PM
  • Tech Level: High
  • Ownership: more than 1 year
  • Verified Owner

1 out of 5 eggsJUNK PRODUCT

Pros: Nothing only that it's a panasonic cordless

Cons: 2 of the handset broke down immediately after 1 year. For 1 of them the speaker phone is dead. For the other headset the mic broke so the other person cannot hear you.

Did you find this review helpful? Yes No

  • Paul C.
  • 12/31/2012 8:18:09 AM
  • Tech Level: Average
  • Ownership: 1 month to 1 year
  • Verified Owner

1 out of 5 eggsnot happy

Pros: looks fine, sound is good, price good, features good

Cons: After about 3 months one of the base/chargers quit charging. I called Panasonic, and after 45 mins, they wanted me to be a tech for them and trouble shoot weather the problem is the cradle or the a-c adapter. They would not replace both. one cradle or one adapter.

0 out of 1 people found this review helpful. Did you? Yes No

  • Daemon B.
  • 8/18/2012 1:18:36 PM
  • Tech Level: Somewhat High
  • Ownership: 1 week to 1 month
  • Verified Owner

4 out of 5 eggs

Pros: Nice feel in the hand
Nice set of features
Good price for 3 handsets

Cons: The UI on the screen is not that intuitive, even after several weeks of ownership it's still awkward.

Did you find this review helpful? Yes No

  • Anonymous
  • 4/4/2012 11:10:50 AM
  • Tech Level: Average
  • Ownership: 1 month to 1 year

4 out of 5 eggs

Pros: This cordless answering system works perfect! The long range and sound quality allow me to talk on the phone in my backyard or to the front of my driveway, while I am picking up the mail.
Having a keypad on the base unit is perfect for when I can not find a handset. I am still able to use the speakerphone which has great sound and volume. There is a small display on the base, so I can see who is calling, even when the handset is misplaced.
The handsets themselves have a large display, the text is very easy to read. Navigating through features and options is simple. The phone has an internal phone book so I can store names and numbers and also has call block so I can also program it to block unwanted calls.
It even works when the goes out by the other handsets powering the base. Even though it is for only a few hours, this is a cool feature and helps in an emergency.

Cons: The answering machine volume and phone ringer, if it allowed you to increase the volume 1 more step would be great, but the loudest is fine.
The phone seems to have a lot of buttons on the base unit, making it seem complicated but it is not.

Other Thoughts: I would highly recommend this phone as it is full of great features, and has great sound and range that does not experience interference.

3 out of 3 people found this review helpful. Did you? Yes No

  • 2/20/2012 10:54:58 AM
  • Tech Level: High
  • Ownership: 1 week to 1 month
  • Verified Owner

2 out of 5 eggsMediocre Phone

Pros: DECT 6.0 - won't interfere with WiFi
Good set of features

Cons: Little thought given to user-friendly design.

The primary use of my old phone was intercom. This phone supports intercom, but it takes 4 button presses to call another handset. It should take 2.

Since caller ID shows the entire number, including 1-XXX, you can't just call someone back from the CID list if they're in your area code. Panasonic was too brain-dead to let you set your own area code.

Generally cumbersome menus - lots of sub-menus, lots of confirmations, it takes too much button pressing to do anything.

One of the top useful features of my old phone was as a clock. This phone displays the time in small type with no backlighting.

3 out of 9 people found this review helpful. Did you? Yes No

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Home > 
Electronics > 
Telephones / VoIP > 
Cordless Phones > 
Panasonic > 
Item#: 9SIA24G1GC2087
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