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Siemens Gigaset

Siemens Gigaset SL450A GO Quad

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Customer rating: 4.4 out of 5 | read 5 reviews or add a review

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2.4” high-resolution TFT colour displayNuisance Call Blocker Future-proof: for landline and/or VoIP telephony Crafted aluminium frame Three answering machines with up to 55 minutes recording time Bluetooth, micro USB & Data synchronisation GO Technology: integration with your smartphone on the go

Siemens Gigaset SL450A GO Quad Bluetooth DECT Phone: Perfect from every angle. A high-end premium feel and outstanding features.


A new premium addition to the Siemens Gigaset range of the cordless phones now comes with outstanding and future-proof features. The Siemens Gigaset SL450A can be used with a standard landline and with up to 6 VoIP telephony accounts. Having a base station that is completely separate from the handset, you are not constrained to having the handset by the phone line, so the charging cradle can be placed in the most desirable location to suit your needs. 


With a whole host of professional features, the SL450A GO is a high-spec premium cordless phone ideally suited for both home and office environments alike with a designer touch.

Intuitive organisation

Conveniently synchronise contacts with Outlook using the USB port or via Bluetooth so you can easily transfer numbers to your Gigaset SL450A GO, which has a phonebook memory of up to 500 contacts (each with space for 3 numbers per entry). With the facility to upload photos, you can personalise your contacts and see who is calling with picture Caller ID. Whilst the expert mode enables you to customise the menu to include the most regularly used features giving you easy access to the functions relied on most.

Superior sound quality and premium designer built.

Renowned for their crystal-clear sound clarity, which has continually seen Gigaset phones the first choice for discerning users, the SL450A GO is no exception.Gigaset SL400A High Sound Performance Featuring their pioneering HSP™ technology, the S450A GO enables calls free from feedback echoes and interference, even when using the loudspeaker so you can always hear and be heard. When it comes to the handset appearance, it's a perfect fit with the aluminium frame and high quality built.

Gigaset GO Technology

Gigaset GOTaking advantage of the modern communications landscape, the Gigaset SL450A GO is able to interface with Android and iOS devices via the Gigaset application. This gives you the ability to easily share contact lists between smart phone and the S450A GO handset. It also has a handy notification feature, which can display on your smart phone when you’re away from home if you’ve missed calls, who called, and lets you know if they left a message. This feature take advantage of the Gigaset GO’s ability to connect to the internet through a LAN ethernet connection. When connected to the internet, the S450A GO not only allows you to check notifications from your smart phone, but can also allow you to make free VoIP calls to any other Gigaset GO phone connected to the internet.

Why should you buy this phone?

With the SL450A GO Siemens Gigaset bring the sexy back to the cordless phones with its designer touch, alumium frame and small footprint. Not to forget the whole lot of the outstanding features and unique Gigaset GO technology. In simple words - it's perfect. From every angle.

IP Features
No. of SIP accounts supported 6
No. of simultaneous/parallel calls supported 1 landine and 2 VoIP
RTCP support
HD Voice
Access to online phonebook
RJ45 LAN connection
For analogue line (BT, Virgin, TalkTalk, etc.)
For VoIP line
No of handsets 4
System can be expanded to 6 handsets in total
Answering machine Yes
Caller ID (Display):
Wall mountable base | additional handsets Yes | Yes
Range indoors | outdoors in metres up to 50 m | up to 300 m
Talk time | standby in hours up to 12 h | up to 300 h
Warranty 2 years
Advanced Features
Incoming call vibrate
Anonymous call blocking/silencing Yes | Nuisance Call Blocker
Repeater compatible


Headset compatible

Bluetooth, GAP and 2.5 mm headset

Data synchronisation Yes
Picture caller ID
Display & Keypad TFT | Yes
Screen size | Backlit 2.4 inch | Yes
Colour Yes
Backlit/ Illuminated Keypad
Date & time
Screensavers pre-installed | downloadable Yes
Out of range indicator | alert Yes | Yes
Low battery indicator | alert Yes | Yes
Phonebook features: Address, email, etc.
VIP contacts
Phonebook transfer
Additional features: Nuisance Call Blocker
Room/baby monitoring
HDSP Audio
Visual message / call indicator
Base Answering Machine
Record time 55
Remote access from outside line
SMS/email notification of new messages
Playback: handset| base Yes | No
Pre-recorded/ personalised outgoing message Yes | Yes
Protection of recording against power failure
Handset locator
Call management & sound
Call blocking
Call transfer between handsets
Call waiting
Conference call
Internal calls (intercom)
Hold | with music Yes | Yes
Last number redial
One-touch loudspeaker
Handsfree volume control
Call Duration displayed
List of last...missed calls with time/date 20
List of last...dialled numbers with time/date 20
Ringtones: melodies| polyphonic | real | downloadable 22
Technical information
Talk time 12 hours
Standby time 200 hours +
Handset dimensions (mm) H130 x W51 x D19
Base dimensions (mm) H132 x W105 x D46
Charger dimensions (mm) H70 x W59 x D29
Battery type Li-Ion
Transmission technology DECT & GAP
Languages 27

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Average Customer Review
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Customers most agreed on the following
Good points
  • Sound quality (5)
  • Looks good/design (4)
  • Easy to set up (2)
  • Easy to use (1)
  • Value for money (1)
Bad points
  • None (4)

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The most helpful favorable review 4 of 4 people found the following review helpful

product reviewsproduct reviewsproduct reviewsproduct reviewsproduct reviews 5/5 Best phones! "We've gone through many many cordless phones over the years and these are by far the best. Feel like a premium product (like they won't pack in after few months like the shoddy bt telephones they replaced) and the sound ... Read the full review › May 18, 2017 by T.P.J

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Product Manuals Siemens Gigaset SL450A GO Quad
Gigaset SL450A - User Manual.pdf

Siemens Gigaset SL450A GO Quad
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