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Item#: 9SIA24G0P58644

Panasonic KX-TG6645B 1.9 GHz Digital DECT 6.0 5X 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

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  • Overview
  • Specifications
  • Warranty & Returns
  • Reviews

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An intelligent blend of technology and function, the Panasonic KX-TG6645B cordless answering system facilitates your daily communication at home or in a small office. Place a handset in every room for handy call dialing/receiving, or use its intercom function to talk with each other. The DECT 6.0 PLUS technology provides enhanced voice quality and longer range, while 1.9GHz frequency enables flawless, interference operation in modern environments filled with Wi-Fi and 3G signal.

Take advantage of Range Boost technology for excellent clarity at extended distances. Count on Tone Equalizer to make out what exactly the caller is delivering. Learn who's calling you first with Talking Caller ID features that reads aloud the caller information. And the hands-free speakerphone with 4-way conference capability offers you the ultimate convenience when making conference calls.

Bring home the Panasonic KX-TG6645B cordless answering system, and enjoy a new level of functionality in your daily communication.

  • newegg DECT 6.0 PLUS Dect Plus technology takes the superb sound quality and outstanding range of DECT 6.0 phones to a whole new level. By increasing the frequency of error correction by up to 80-times, the transmission quality is improved and the phone's range is extended. Engineered to work in 1.9GHz frequency, the DECT 6.0 phones won't conflict with common wireless devices such as 2.4GHz routers, wireless keyboards and mice, microwave ovens, or other household items. And because it's digital, you'll enjoy long range and clear sound while deterring eavesdropping.
  • newegg POWER BACK-UP OPERATION (Handset) What happens to your phone when there's a power outage? Nothing, with Power Back-Up Operation. A powerful battery back-up system keeps you connected when the power goes out. Keep a charged handset in the base unit and you can still make and receive calls with the other cordless handsets.
  • newegg TALKING CALLER ID Now you can hear who's calling from across the room with text-to-speech technology. Panasonic phones feature Talking Caller ID that announces caller ID information in between rings. What could be more convenient?
  • newegg RANGE BOOST Clarity even at extended range is a hallmark of Panasonic cordless phones. With Range Boost technology and a built-in antenna to the base unit, this model extends transmission range by up to 20% compared to previous generation phones - so you can keep talking as you keep walking.
  • newegg TONE EQUALIZER Everyone hears differently. To maximize clarity or even accommodate hearing loss, Panasonic added the Tone Equalizer to this model. This exclusive feature actually lets you control the bass, mid-range, or treble tones in a callers voice for maximum clarity.
  • newegg INTELLIGENT ECO MODE This feature automatically lowers the power consumption when you're using the handset close to the base unit, extending the available talk time. When less power is used by the handset to communicate with the base unit, battery life is prolonged which results in less frequent charging and optimal use.

Learn more about the Panasonic KX-TG6645B




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 Volume(Handset/Base): 6-step + OFF
Ring Tones
10 (5+5) (Tone+Melody)
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


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


Battery Type
NiMH Battery
Battery Size
2 x AAA batteries
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
Warranty, Returns, And Additional Information
  • Warranty
  • Limited Warranty period (parts): 1 year
  • Limited Warranty period (labor): 1 year
  • Read full details

Customer Reviews of the Panasonic KX-TG6645B

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  • Terry W.
  • 3/7/2016 2:21:12 PM
  • Ownership: more than 1 year
  • Verified Owner

5 out of 5 eggs(Still) Happy Here

Pros: Purchased in November 2011 to replace an old 2.4Ghz 1 phone system I had had for over a decade. In that time, no issues to report. Batteries in all phones continue to hold charge well, no issues with signal range, ... . In short, a good purchase.

Update (3/7/16): Still going strong after over 4 years. All of the batteries still hold their charges as well.

Cons: None

Other Thoughts: None

Did you find this review helpful? Yes No

  • David B.
  • 7/22/2013 6:24:34 PM
  • Ownership: 1 month to 1 year
  • Verified Owner

5 out of 5 eggsExcellent Phones

Pros: Easy to setup, put contacts in one phone and all receive, speaker phone on all phones

Cons: None

Other Thoughts: Excellent quality, sound, ease of setup, and great distance from base

Did you find this review helpful? Yes No

  • William S.
  • 7/5/2013 6:44:45 AM
  • Ownership: 1 month to 1 year
  • Verified Owner

5 out of 5 eggsA Real S teal

Pros: Powerful range and crystal clear. But the outstanding feature that we LOVE is the simple process to block unwanted sales calls-even when the caller's number is "available". The system also announces who the caller is. Thanks Newegg and Panasonic!!

Cons: Not a one!

Did you find this review helpful? Yes No

1 out of 5 eggsMissing info

Pros: Looks nice.

Cons: Can't find some info.

Other Thoughts: This phone is going on Shell Shocker in a couple hours so I've downloaded the manual for it. But, it won't tell me if the base unit has an indicator for Old Messages. The one I have now doesn't and it's a real pain. If my wife sees the message light flashing and listens to a message that’s for me, she has to leave me a note to play the messages because there’s no other way for me to know. Our older phones had a light that was:
Off = no messages, On = old messages, and Blink = new messages.
I’ve also tried Panasonic CS and they couldn't help me with this, either. It's frustrating not getting an answer to a feature that’s important to me, hence the 1 star rating.

1 out of 12 people found this review helpful. Did you? Yes No

  • Gavin A.
  • 5/10/2013 12:25:11 PM
  • Ownership: 1 month to 1 year
  • Verified Owner

5 out of 5 eggsAwesome and Perfect

Pros: Feature laden. Impressive battery Life. 5 handsets.
Clarity of calls.

Cons: None.

Other Thoughts: We've had this as a replacement set for my Previous Panasonic 4 handset model. That unit worked pretty well, but when the batteries started going, they went fast.
This model has a LONG talk time, and a great standby time out of the charger.
Clarity on all calls, with no breakup, or dropped calls ever.
Naming of each handset is handy not only for Intercom, but when you wander around and find a hand unit, you know where it goes back to without doing an 5 location audit.

We have a 50 x 100 foot lot and I can go to my neighbour's house and continue a conversation with perfect clarity.
Contrary to some opinion on here, I am able to recall a dialed list, not just the last call dialed and all calls incoming all from the MENU and navigation buttons.
This is an excellent set, with no flaws or faults that I have discovered as of yet. What more could one ask of a home phone landline set? Nothing. You won't regret getting this unit.

2 out of 2 people found this review helpful. Did you? Yes No

  • Mehboob K.
  • 4/30/2013 8:00:44 AM
  • Ownership: 1 month to 1 year
  • Verified Owner

5 out of 5 eggsKX-TG6645B

Pros: Fantastic Product

Cons: NONE

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  • Mark M.
  • 4/24/2013 7:12:19 PM
  • Ownership: 1 week to 1 month
  • Verified Owner

5 out of 5 eggslovin' it.

Pros: Previous phone system was a Panasonic w/ 4 handsets, so I was familiar w/ the set-up. This model has 5 handsets, much better range, and has more memory for contact lists... more than twice as much.
The handsets are logically laid out and easy to use. These are great phones.

Cons: With more features, this model was a teeny bit more tedious to set-up, but the instructions were clear and everything works perfectly.

Other Thoughts: Got a phone in my shop now... I love it.

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

  • Anonymous
  • 4/9/2013 8:21:21 PM
  • Ownership: 1 month to 1 year
  • Verified Owner

5 out of 5 eggsExcellent reception and performance

Pros: 1. Alot of phones for a good price
2. Quality dials and display
3. Good features
4. No echos so far
5. Light
6. Takes rechargeable batteries

Cons: 1. No privacy mode, miss this from my old 5.8GHz phones
2. Can not mass page with handsets, would be useful

Other Thoughts: They are good phones, I find no issues with them. I am annoyed it took literally 8 hours to charge these I mean seriously? But I could just have bought pre-charged batteries I suppose. I saw other phones but was not sure if the newer versions were good, this one has a battery mode where it uses the handset if there's a power outage. Anyways thanks bye

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  • Joseph C.
  • 3/28/2013 3:53:36 AM
  • Ownership: 1 day to 1 week

5 out of 5 eggsSWEET PHONE SYSTEM ! ! !

Pros: 1.9 GHz
DECT 6.0
Voice Clarity
TONS of nice features
uses 2xAAA batteries ! !
Looks and works GREAT ! !

Cons: None

Other Thoughts: I got this phone system for an unbelievable price!! I was having problems with my 5.8 GHz phone system because they were interfering with my my wireless N router causing calls to break up (runs on same frequency). Everything works perfectly now!

Did you find this review helpful? Yes No

  • ed g.
  • 3/25/2013 7:31:58 AM
  • Ownership: 1 week to 1 month
  • Verified Owner

5 out of 5 eggsgreat phone

Pros: works great good phone as panasonic is

Cons: none

Did you find this review helpful? Yes No

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