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Siemens Gigaset SL400A Bluetooth Cordless Phone

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Colours available:
Glossy Black
Availability: In Stock
Discount: 33%
You Save: £50.00

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Product Code:
£149.99 £83.33
Customer rating: 5/5 out of 23 reviews.

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Product Description

The slimmest designer phone with highest technology

Introducing telephony’s newest pocket-sized design object: the Gigaset SL400A. With a genuine metal frame and metal keypad, this home telephone adds a touch of luxury to your home. A large colour display in highest quality is easy on the eyes – and its Bluetooth headset connection offers you comfortable conversations. Names and numbers of your friends, family and important contacts are easy to manage in the generous address book with space for up to 500 vCard entries. And keeping it up-to-date is simple with synchronisation via Bluetooth or mini-USB. ECO DECT technology means you use less energy and save money with the Gigaset SL400A – while also reducing radiation.

The Gigaset SL400A – the slim, pocket-sized phone with cutting-edge features, precious materials and innovative slim design – perfectly fits your home.
First-class materials: metal frame and keypad
Only the best: the Gigaset SL400A features a genuine metal frame, giving home telephony a high-end aesthetic and luxurious touch. The illuminated authentic metal keypad not only looks great – it also helps you find the numbers you need with ease. Equipped with the best – inside and out – the Gigaset SL400A reaches new heights in home telephony.
An answering machine with extra benefits
Answering machine with remote playback fully integrated into the base, the answering machine offers 45 minutes recording time. Its feature pallet includes a skip-back function for quick repetition of part of a message – and voice announcements of the date and time of the message. Just look at the handset’s display to quickly check for new messages – and even use the handset to access them. For personal or business calls, record important phone conversations with the answering machine’s call recording feature.Benefit from the Gigaset SL400A’s answering machine even when you’re out. Remote message retrieval lets you listen to your inbox from an external location. Plus, a text message to your mobile notifies you when there’s a new message.
Customisable colour display
Despite its slender stature, the Gigaset SL400A boasts a large 1.8” high-resolution TFT colour display, which makes reading and navigating simple. Love to personalise things? Upload photos of your friends and family – then assign them to the appropriate telephone numbers. Next time they call, the picture caller ID2; feature shows the corresponding photo on the display. Alternatively, set uploaded pictures as your screensaver – or use slide show feature for a personal viewing session.
Focus on your favourites
Via expert mode, customise the menu view to include the features you regularly rely on. The simplified features’ list makes it easy for you to find the functions you truly use and need every day – and the rest are simply hidden from your sight.
Store all your contacts
There’s plenty of room foreveryone in the Gigaset SL400A’s address book: it has space for up to 500 vCard entries. Simply enter in the names and numbers of your circle of friends & family – and they’re at your fingertips when you need them.
Comfortable Bluetooth features
From a headset connection to address book updates, the Gigaset SL400A’s Bluetooth® technology keeps you connected. With the Bluetooth headset connection, just connect your compatible headset and savour the comfort of hands-free calls. Enjoy effortless synchronisation via Bluetooth or mini-USB to keep your address book current.

More phoning pleasure

Lengthy calls are easy on the Gigaset SL400A. It has a generous talk time of up to 14 hours and a standby time of up to 230 hours. Select from four hands-free options for flexible calling in brilliant sound quality. Personalise the sound of your Gigaset SL400A by selecting the ringtone that fits your style – or select the handset’s vibracall feature, which vibrates to indicate an incoming call.

ECO DECT: Pure energy savings and radiation-free


 The energy-saving power supply of the Gigaset SL400A consumes less electricity, so it’s kinder to the environment, and kinder to your wallet. Like all Gigaset cordless phones, it variably reduces the transmitting power from the handset to base station depending on their distance apart. You can also reduce the transmitting power of the Gigaset SL400A’s base station by 80% simply by selecting the ECO Mode. Furthermore, radiation-free ECO Mode Plus turns off the transmitting power when the phone is in standby.


If you’re looking for a genuine designer phone with the highest technological features, then the Gigaset SL400A is the perfect telephone for your home.


If you struggle with mobile reception in your home and would like to turn your home phone into an extension of your mobile – for comfortable calls in best sound quality and without mobile dead zones, please click here. 


The correct additional handset for this phone is available here.

Key Features:

Display and Keypad

  • High-quality genuine metal keypad
  • Graphical display 
  • 65k full color 1.8 inch display : 128x160 pixels
  • Illuminated Display
  • Easy-to-use text-based or icon-based menu
  • Display of caller’s number (CLIP)
  • Multilingual menu for up to 21 languages 
  • Time displayed
  • Date displayed
  • Range (handset to base station)
  • Charging status
  • Call duration
  • Illuminated (white) keypad
  • Navigation key
  • Message indicator key
  • Mute hard key

Phoning essential

  • Bluetooth Connectivity
  • Phonebook entries : 500
  • List of last 20 missed calls with time and date
  • Last dialed 20 numbers
  • Phonebook transfer: via DECT, via Bluetooth
  • Automatic dialing of operator prefix
  • Room monitoring
  • Vibracall
  • Plug-and-play installation
  • Free internal calls between handsets
  • Internal transfer of external calls
  • Parallel calls internal - external
  • Up to 612 characters SMS
  • Up to 4 personalized SMS in-boxes


  • HDSP Read handset
  • HSP
  • Handsfree talking with brilliant sound quality
  • Adjustable volume of handset sound (5 levels) 
  • New high-quality polyphonic ringer melodies
  • Crescendo mode
  • Vibracall and on/off
  • Ringer melody output via handsfree speaker
  • Advisory tones
Messaging functions (SMS)
  • Sending/receiving of SMS with up to 640 characters (Concatenation of up to 4 SMS)
  • Storage of 50 short SMS
  • Up to 4 personalized SMS-Inboxes
  • Transmission of e-mails via SMS (Separate directory for e-mail address)
  • Saving of numbers from SMS to directory
  • SMS protocol 1

ECO Dect

  • Up to 60% less energy consumption  
  • ECO Mode - manual reduction of transmitting power by 80%
  • ECO Mode Plus for switching off of transmitting power of base station and all registered handsets 
  • Variable reduction of transmitting power between handset and base station

Answering machine features

  • With up to 45 minutes recording time
  • New Skip-back function to repeat latest seconds of message
  • Voice announcements of message date and time
  • New message notification via SMS to an external number
  • Display of new messages on the handset
  • Remote message playback
  • Operation of answering machine via handset
  • Telephone call recording function
  • Listening in to handset
  • Call pick up to answer calls during message recording
  • Protection of recordings against power failure 

Handset dimension & other facts

  • Range indoors : 50 meters
  • Range outdoors : 300 meters
  • Standby time: 230 hours
  • Talk time: 14 hours
  • Expandable to up to 6 handset
  • GAP , DECT Capable 
  • Wall mountable: Base Station
  • Batteries :  Li-Ion
  • Dimensions handset (H x W x D in mm) 120,8 x 46 x 16
  • Dimensions base station (H x W x D in mm) 117 x 115 x 47
  • Dimensions charger (H x W x D in mm) 49 x 126,2 x 60,5
  • Two year warranty

Discount: 33%
You Save: £50.00

Product Guide

SL400_SL400A_environment(0.95 MB)

Gigaset SL400 User guide full version(3.02 MB)

Gigaset SL400 User guide short version(0.78 MB)

23 Siemens Gigaset SL400A Bluetooth Cordless Phone reviews

Average Customer Review: 5/5
Handset features
Value for money
Sound quality
Ease of set up/use
Battery life


98 of 102 people found the following review helpful
04 Aug 2010
The SL400A First Impressions Anonymous 4.5/5 roll over for details

Good points Excellent build Quality, A solid metal frame phone that is a very nice slim design

Bad points None that i can fnd.

Other thoughts

The first thing that i will say about the SL400 phones is that they are not cheap, after having numerous BT branded phones (that were of dubious quality) and a few Binatone phones(that were even worse) over the last few years i thought it was time to bite the bullet and splash out on what i can only describe as one of the best phones i have ever seen or used.
The first thing that you notice about the phones as you unpack them is the weight and build quality, they comprise of a nice chromium plated solid metal frame and a metal keypad similar to the laser cut key pads of the Motorola Razr. The batteries install easily and are of the flat lithium-ion type you find in mobile phones. Once the batteries are installed and the shiny black back is clipped on you realise that all that chrome and shiny black is going to show up all the fingerprints. Belt clips are supplied as an option if you want to use them and do not really detract from the overall design of the phone.
Once the screen bursts into life the display quality is excellent and is as good as or better than some mobile phone displays.
The phone cradles are also well made with a removable power connector that clips into the base. The cradles/charging stations did initially seem rather light but once the handsets are dropped in they appear to be stable and the rubber feet stop them from slipping.
The answer phone base unit again was a surprise the size is quite minute compared to some, the unit can be wall mounted and is also supplied with a rather nice clip on back that holds the power connector and telephone cable in place. Once plugged in the handsets registered with no problems.
Setting up the phones was a doddle, the use of the Bluetooth made it possible to transfer my entire directory from my Sony-Ericsson to the one handset, the directory was then copied to the additional handsets using the copy facility. The layout of the menu was simple and similar to that of a mobile phone.
It's too soon to comment on the standby battery life as the manual states 230 hours although this will only be achievable after a few charge discharge cycles.
Having only really used the most basic features of the phones and answering machine i am totally impressed and wish i had brought a decent set of Siemens phones instead of all the cheaper models. As these phones come with a two year guarantee Siemens have covered all the bases.
So if anyone is thinking of getting a set of the SL400 phones all i can say is go ahead, i don't think you will be disappointed and in many ways, you get what you pay for. On a final note the service from LiGo was excellent.

John Spiler
29th Jan 2012

What about the sound quality and reception.
new feature Help other customers find the most helpful reviewsWas this review helpful to you? yes no
62 of 63 people found the following review helpful
17 Aug 2010
blackdahlia 5/5 roll over for details

Good points You can send contacts from one phone to the other. And you can add your own rings tone using a data cable and software you can download from the manufacturer of the phone.You can also can add photos to contacts so when they call you there photo will appear. The screen is a good size as well. The phone is a comfortable size to hold in hand. And it has blue-tooth, the phone also vibrates if the phone is on silent. I Would highly recommend this phone.

Bad points Cannot think of any.

Other thoughts

A little more room on phone for adding more of your own ring tones and photos.

new feature Help other customers find the most helpful reviewsWas this review helpful to you? yes no


see all 23 reviews »

Customers who bought this item also bought:

Siemens Gigaset SL400H Additional Handset

Plantronics C65 Wireless DECT Headset

Siemens Gigaset Repeater

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