Mens Casio G-Shock Alarm Chronograph Radio Controlled Watch GW-M850-1ER


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£110.00 £72.60
(with 25% code £54.45)
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4.91/5 Based on 86 customer reviews

Sorry, this product is now discontinued and is no longer available.


This classic looking Casio G-Shock Wave Ceptor watch is solar powered and radio controlled, so it never needs a battery and it sets itself automatically. Features a rally timer function, stopwatch, world time, auto EL backlight, day/ date and is water resistant to 200 metres. The digital timepiece has a round dial and fastens with a black rubber strap.

  • Brand: Casio
  • Gender: Gents
  • Model Name: G-Shock
  • Movement Source: Japanese
  • EAN: 4971850899679
  • Guarantee: 2 years
  • Packaging: Casio packaging
  • MPN: GW-M850-1ER
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This watch is supplied with:
  • Official Casio presentation box
  • Official Casio guarantee
  • Instruction manual (where applicable)
This product can be shipped to:
  •   UK (United Kingdom)
  •   EU (European Union)

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Size and Fit

  • Case depth approx.: 14.00mm
  • Case width approx.: 42.00mm

Features and Functions

  • Alarm: Yes
  • Backlight: Yes
  • Chronograph: Yes
  • Movement: Tough solar
  • Radio Controlled: Yes

Materials and Care

  • Analogue/Digital: Digital
  • Primary Material: Plastic/Resin
  • Case Shape: Circle
  • Clasp type: Strap buckle
  • Dial Colour: LCD
  • Strap colour: Black
  • Strap Type: Rubber
  • Water Resistance: 200 metres

Ratings and Reviews

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Average rating: 4.91 / 5
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ian | Wed 5th March 2014 |

Great watch, as expected
Excellent price cheapest on web
Great service from the Watch shop, fast delivery and great comms

0 out of 5 people found this review helpful
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Tavernier | Fri 28th February 2014 |

Its the first time I purchase a radio controlled and solar powered watch. I was tired adjusting the digital and analog time on my previous Casio watch. On the other hand, I am very satisfied with the brand Casio on one condition : to have a long life battery.

After scrolling several online sites, I decided to order a Casio GW-M850-1ER at Watch Shop.
The watch was in a nice metal box filled with protection foam this box itself was in a little cardboard box. No risk of damage during the transport.

The design of the watch is very pleasant, exactly as shown on the pictures. No bad surprise ! Its a little smaller and a bit lighter as my previous Casio. The resin band seems durable. I hope it will be confirmed in the future. This band is very long, maybe too long for people with small wrist.

The users guide is very comprehensive and the French version is quite well translated. I suppose the others versions are also OK. Only one disadvantage : the booklet is rather bulky.
No problem at home, but I think you have to make a digest if you want to keep the guide with you when you are on a trip.

The watch is shock resistant. I didnt try it. Im confident in the specifications of the manufacturer.

The watch came full functioning. The basic settings were OK. The time difference with a radio controlled alarm clock already receiving the signal was less than 2 seconds. After performing manual receive, the difference was zero. The following nights, the auto receive worked each time. This is indicated by the G letter in a little window. You can also easily check the date of the latest synchronisation by pressing theforward knob.

The battery power indicator is on H high and stays on this position. At the moment, I had not yet the opportunity to test the efficiency of the solar cell because I have been using the watch for just a few days, but I suppose I will get no trouble with it.

I use very often the stop watch function and I need a large display range. Many watches measure up to 1 hour its not enough for me. This one measures up to 24 hours : thats great. The buttons are protected against an unintentional action. Therefore its not so easy to press them. Because of the many functions available, you have to press 6 times the mode button in order to accede to the stop watch from the time keeping mode and twice more to get back to the time keeping mode.

The watch has plenty of others functions :
- Rally,
- Countdown timer,
- Recall mode,
- Up to 5 independent alarms,
- Manual or auto illumination, you can choose,
- Second local time,

Its also possible to switch off the auto receive and to set the time manually. Very useful if you are in a country out of the reception range of the atomic clocks.


I am very happy with my purchase. This watch meet perfectly my expectations and will probably meet those of many other customers.

3 out of 7 people found this review helpful
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Mark | Thu 23rd January 2014 |

Does what it says on the box. Radio updating works fine if you leave the watch by a window overnight. Display is clear and functions simple to use. Rugged construction. Only downside is that the strap is not particularly comfortable.

3 out of 11 people found this review helpful
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AF | Mon 20th January 2014 |

Super watch. Manual is quite short really but took a while to digest, but the instructions worked well. It doesnt always reset the time every night and I have to do a manual reset during the day. Time indicator is a bit small, like all Casio watches. But I love the idea of a watch that never gets out of time, never needs a battery and can survive hard knocks. I show it to everyone I meet!

2 out of 6 people found this review helpful
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helen1986 | Fri 10th January 2014 |

fantastic watch and the price was great, its not to big which is why i love it more. The box it came is was lovely. It looks super on.

1 out of 11 people found this review helpful
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Sonia Bass | Thu 9th January 2014 |

Really pleased with this watch, bought as a present for my husband. He particularly wanted a sturdy day time watch, that he could wear when out in the garden. This G Shock watch fits the bill perfectly. Easy to see the time at a glance. Looks smart too, with a strap that makes it easy to put the watch on and take it off. Also comes in a smart and practical metal tin.

2 out of 3 people found this review helpful
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Joy Taylor | Mon 6th January 2014 |

I ordered this watch during the Christmas period as a gift and was absolutely delighted with the service provided by Watch Shop - the order was quickly processed and I was kept informed about its delivery progress until it arrived within 2 days of ordering. The watch was duly presented on the day after Boxing Day and its new owner was delighted and is wearing it and boasting about your great service to everyone he meets!!!! and he seems to meet a lot of people. I ordered through Watch Shop after researching many other watch providers and will certainly order again from you. Many thanks.

2 out of 5 people found this review helpful
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L MN | Mon 6th January 2014 |

I bought this watch as a gift for my partner and It was very well received. All the functions are easy to use and set up - the instructions are very clear and his favourite part is the fact that it is solar powered.

Very good watch and very good service

2 out of 2 people found this review helpful
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kirsty | Thu 2nd January 2014 |

smart stylish watch
colour black, therefore can be worn for work and for smart/casual
multi functions, easy to set up.
Doesnt pinch skin or catch arm hairs
Good value

1 out of 3 people found this review helpful
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Jessica Kelly | Tue 31st December 2013 |

Item bought as a gift, really good looking watch. Practical for other half to wear to work. Meets all his needs for a day to day watch. Great that it doesnt require batteries. Service from you guys was second to non, I wouldnt hesitate to purchase goods from you in the future. Thank very much, wishing you happiness for the New Year.

3 out of 5 people found this review helpful
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About Casio

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Legendary Japanese electronics company Casio is loved for its range of innovative and reliable watches. Casio offers both analogue and digital watches for men and women in a variety of styles and colours, perfect for everyday wear, sportswear more adventurous activities. The G-Shock and Baby-G watches are perfect for keen sportspeople, thanks to their durability, excellent time keeping and advanced sports features. Meanwhile, the classic unisex Casio watch adds a little retro flair to any outfit. Though simple, the design is iconic, and an absolute must for any watch lover's collection. Available in gold, rose gold, black and silver, there's a colour to match any style. The brand also produces a range of high-quality, professional watches ideal for those who lead an adventurous lifestyle. The premium pieces are mud and water resistant, and include accurate compasses to help keep you firmly on the trail. Explore the full range of Casio's analogue & digital watches, keep it classic with the Casio gold watch collection or browse their feature rich selection of sports watches.

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