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Siemens Gigaset

Siemens Gigaset S850A with GN9120DG Wireless Headset

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Customer rating: 4.4 out of 5 | read 17 reviews or add a review

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Future-proof: for landline and/or VoIP telephony Smartphone integration via Gigaset GO Extra-large phone book: up to 500 entries with 3 numbers Includes the Jabra GN9120DG Wireless Headset

Gigaset S850A GO Digital Cordless Phone with Wireless Headset

The new Gigaset S850A GO is a premium digital cordless phone with future-proof technology so that you can connect to both landline and VoIP. Stylish and classy the handset boasts a metallic-like frame and large full-colour display. As with all Gigaset phones, the S850A GO is manufactured in Germany and comes with their 2-year warranty as standard. Now with the GN9120DG DECT Wireless Headset so that you can take calls hands free.

High definition HDSP sound

Gigaset phones are renowned for their superior sound quality and the Gigaset S850A GO is no exception. Featuring the latest HSP and HDSP sound technology you will be able experience calls in reliable clarity whether you’re connected to landline or VoIP. The handset further benefits from an integrated full-duplex hands-free speaker with volume control.

S850A GO

Gigaset GO features

Boasting the latest features the Gigaset S850A GO can integrate with your smartphone via Android or iOS app so that you can update your phonebook easily with contacts on your mobile. It can also be set up so that your Smartphone will receive notifications whenever there is a missed call or voicemail waiting for you on your S850A.

Digital answer machine

Gigaset S850A with Answering MachineNever worry about missing another call or message thanks to the integrated answer machine on the S850A GO. With up to 45 minutes recording time your phone has enough capacity to store all your messages even when you’re away for longer periods of time (such as holidays). Advanced features include the facility to set up separate answer machines (up to 3) for different VoIP accounts; record personalised greeting; and remote access.

9120DG Wireless Headset

The Jabra GN9120 DG Wireless Headset

Whether cooking at home or working in an office, the Jabra GN9120 DG lets you get more done whilst you’re on a call. With up to 12 hours of continuous talk-time and a wireless range of up to 150 metres you’ll be able to enjoy crystal-clear sound throughout your home or office. The GN9120DG can be paired with the S850A GO in a few simple steps after which you’ll be able to answer incoming calls directly from the headset. (*please note that it is not possible to place any internal or external calls using the headset as there is no keypad connected to it – you will need to dial out using the cordless phone and transfer the call to the headset)

Why should you buy this cordless phone with wireless headset?

If you’re looking for a professional quality cordless phone with a wireless headset then the Gigaset S850A Go with the Jabra GN9120 DG is our top-choice.

For analogue line (BT, Virgin, TalkTalk, etc.)
For VoIP line
No of handsets 1
System can be expanded to 6 handsets in total
Answering machine Yes | Up to 55 Minutes
Phonebook Up to 500 entries
Keypad/touchsceen Yes | No
Caller ID (Display):
Wall mountable base | additional handsets No | Yes
Range indoors | outdoors in metres 50 | 300
Talk time | standby in hours 12 | 300
Warranty 2 years
Advanced Features
Anonymous call blocking/silencing Anonymous call silencing
Repeater compatible


Headset compatible
  • Via 2.5mm Headset Socket
  • Via GAP
  • Via Bluetooth
Large buttons/font No | Yes
Data synchronisation with Outlook via mini-USB and Bluetooth
Picture caller ID
Screen size | Backlit 1.8" | Yes
Colour Yes
Backlit/ Illuminated Keypad
Date & time
Screensavers pre-installed | downloadable Yes | Yes
Out of range indicator | alert Yes | Yes
Low battery indicator | alert Yes | Yes
Space per entry Up to 3 Numbers with first and last name; Email Address; Anniversary with reminder; VIP Ringtone; Picture for Caller ID
VIP contacts
Phonebook transfer
Additional features: Nuisance Call Blocking
Room/baby monitoring
Night Mode
HDSP Audio
Base Answering Machine
Record time 55
Remote access from outside line
SMS/email notification of new messages
Playback: handset| base Yes | No
Message counter indicator
Pre-recorded/ personalised outgoing message Yes | Yes
PIN protected
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
Earpiece volume control 5 levels
Handsfree volume control
Call Duration displayed
List of last...missed calls with time/date 20
List of last...dialled numbers with time/date 20
Two-way recording
Ringtones: melodies| polyphonic | real | downloadable 22
Technical information
Talk time 12 hours
Standby time 200 hours +
Battery type NiMH
Battery size AAA
Transmission technology DECT & GAP
Frequency band 1.88 to 1.90 GHz
Languages Yes (27)
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  • Value for money (1)
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Product Manuals Siemens Gigaset S850A with GN9120DG Wireless Headset

Siemens Gigaset S850A with GN9120DG Wireless Headset
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