Gigaset SL400A Digital Telephone and Answering Machine, Twin DECT, Black/Silver

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Product information

The Siemens Gigaset SL400A Digital Cordless Telephone with Answering Machine is a twin-pack telephone set that has several functions including Bluetooth headset connection and a 45-minute recording time on the answering machine to give you an ideal home communications unit.

Key benefits:

  • Winner the prestigious iF Product Design award, this phone has a slim appealing design with a genuine metal frame and illuminated metal keyboard.


  • The large colour display, screensaver picture show, and 4 different hands free settings with great sound quality add to the great user experience you’ll receive when using this phone.


  • The answering machine has additional features like Skip-back function to repeat the latest seconds of a message, voice announcements, new message notification to external number, remote message playback and telephone call recording function.


  • A 500 vCard address book allows you to store all your personal and business contacts in the one place, allowing easy access to people you need to speak to in an instant.


  • Talk for longer with 14 hours of talk time and 230 hours of standby time, allowing you to have your handset by your side when you need it.


  • Vibracall will enable you to keep your phone on silent, simply vibrating to get your attention when someone’s calling you.
Answering machine
Phone and answering machine
Caller ID display Information See name and number of who's calling (there may be a charge for this service)
Caller memory Information Stores popular numbers so you can retrieve them easily
500 name and number directory
1.8" LCD display
Eligible for International Delivery
GAP compatible Information Use more than one phone from the same base station: e.g. have one phone in the hallway, another in the bedroom
Last number redials Information Lists the previous numbers so you can redial them very quickly
Maximum range Information How far away from its base the phone will pick up a signal (normally 300m outdoors)
Maximum Standby Time Information The time the phone can be left off the charger (when not in use) before needing a recharge
230 hours
Maximum Talk Time Information How long you can use the cordless phone for, once it’s been fully charged
14 hours
Message Recording Time Information How many minutes' worth of messages can be recorded
45 minutes
Model name / number
Phone set
Ringtones Information Choice of ringtones: polyphonic tones have a greater range of tone for better sound quality; with MP3 ringtones you can use music as a ringtone, such as a favourite song
Polyphonic ring tones/melodies
SMS capable Information Send text messages from your phone to another SMS-capable phone
Wall Mountable


Click & collect

Free from John Lewis or Waitrose shops for collection tomorrow from 2pm
366 participating John Lewis and Waitrose shops

Collect + from a local shop from tomorrow - postcode exclusions apply for Collect+ deliveries

5000+ participating Collect+ shops

Standard delivery in 5 working days


Named or Saturday UK delivery


Named day UK delivery pre-10.30am


International delivery not available

We want you to be happy with your purchase. If you're not, depending on the type of product, you can make free returns in the UK via John Lewis shops, Royal Mail, Collect+, or MyHermes. If you need to arrange collection of large or heavy items, call us on 03456 049 049. For international returns queries, call us on +44 1698 545 454. Find out more about returns.

You'll find returns information on your delivery note. Unless faulty, we'd like you to make your return within 90 days of purchase. Exceptions apply to certain products - find out more about our refund policy.


Find out more about returning products

Q & As

Rated 4.6 out of 5 by 19 reviewers.
Rated 5 out of 5 by Excellent system Purchased this to replace a cheaper system. Very robust, with a good weight for handling. Easy to set up and 'does what it says on the tin!' I like it when things perform as advertised! Would recommend! 17 February 2015
Rated 4 out of 5 by Looks nice so far phone seems okay,I bought it about six months ago. 10 July 2014
Rated 5 out of 5 by Great quality I have always bought Panasonic phones to date but have been disappointed with the sound quality of the last two so decided to go for these siemens phones. I have had them for about a month now and am very pleased with all aspects, sound, quality, easy set up, and smart appearance. 23 February 2014
Rated 5 out of 5 by Super neat phone system Read other reviews, found all the 5 star ones to match my own experience - fairly idiot proof set up - i agree the phones do way more than we need but you don't need to worry about that- they really do work well, are instinctive to use and you can gradually learn more if you need to. They replaced rubbish BT phones which were cheap and didn't last. Easy to hear ringtone and great travel distance. 05 February 2014
Rated 5 out of 5 by SL400A I was thinking hard whether to pay a premium for this set which I bought as a 4 set. I had read that when it comes to cordless, Siemens are like the Rolls Royce. In opening - it was worth it. Quality metal casing, lighter than I expected (downside) but excellent call quality. Dated icons, but nice feel - and great ringtones. 8.5/10! 29 January 2014
Rated 1 out of 5 by would not recommend I am in the process of returning the handset and base to gigaset for the 2nd time in 2 months. Both handsets have an intermittent echo/volume issue that deafens you whilst you are on the telehone. And one base does not work, it was (apparently) fixed for a fee by Gigaset even though the item is still under guarantee. 23 January 2014
Rated 5 out of 5 by First rate telephone set Looks good. Feels good. Sounds good. I am delighted with my purchase which was also so simple to achieve via the John Lewis website. Would recommend to anyone looking to buy a dual handset system. 22 October 2013
Rated 4 out of 5 by Misses out on a final star This is far and away the best landline phone you can probably buy. The build quality and options available on this phone are incredible, and it's very well designed. As for the negatives, there are three that I have found (the first two pertain to contact sync): 1. When you sync contacts from, say, Outlook - it automatically includes birthdays and automatically sets a calendar notification for every day there's a birthday. These cannot be disabled, which is very annoying when you have hundreds of contacts - each with a birthday on almost every day of the year. 2. Contact sync from Outlook does not work with 64-bit Microsoft Office. We have had to uninstall the 64-bit version and install the 32-bit version to enable us to use the contact sync capability of this phone. 3. As I have just discovered, if - like me - you receive an obscene amount of cold calls during the day, on the positive side you can disable the ringer between certain times, so these calls simply go to answerphone. On the negative side, there is no way to delete all the messages on the answerphone without listening to them all first. I have over 50 messages, and I can't be bothered to go through deleting them all. This is a massive oversight, which can in theory be fixed by a firmware update. But I don't hold much hope in that being fixed, sadly. So - as an overall rating of three stars is apparently "average", it wouldn't be fair to give the whole phone three stars. It's considerably better than average, overall. However it's also far from perfect, so I can't honestly give it five stars. If you hope to use the advanced functions of this phone, just be aware there are these limitations. 28 December 2012
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  • 2 year guarantee included

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