
Casio G-Shock Men's Alarm Chronograph GR-8900-1ER
Choose options
At a time when watches were seen as fragile, delicate instruments, Casio’s head of watch design, Kikuo Ibe, set out in 1981 to create “a watch that doesn’t break, even when dropped.” After 200 prototypes and two years of development, the Casio G-Shock was launched in 1983. Gaining its now legendary toughness from Ibe’s revolutionary decision to suspend the module inside a hollow rubber structure, a move he claims was inspired by seeing a child playing with a bouncy ball and realizing that no harm ever comes to the ball’s core, the G-Shock has been the go-to name in superbly durable and precise wristwear ever since. Every G-Shock is 10 metre drop resistant, hammer shock resistant, vibration resistant and water resistant to 20ATM, truly setting the standard in timekeeping toughness.
This Casio G-Shock Men’s Alarm Chronograph has a digital display protected by a 52mm black resin case and scratch resistant mineral glass. Featuring a countdown timer, a world timer and the ability to set five daily alarms, the watch is fitted with a black resin strap and is water resistant to 20ATM. All Casio watches come with a 2-year manufacturer’s warranty.
UK Delivery
| Selling Price | Royal Mail 48 (Tracked) |
Royal Mail 24 (Tracked & Signed) |
Special Delivery Next Day (Mon – Fri) |
Special Sunday Delivery (Before Sat 12pm) |
Royal Mail Special Delivery by 1pm |
|---|---|---|---|---|---|
| £0 to £99.99 | FREE | £4.99 | £7.99 | £7.99 | £9.99 |
| £100 to £499.99 | N/A | FREE | £7.99 | £7.99 | £9.99 |
| £500 or more | N/A | N/A | FREE | £7.99 | £9.99 |
We know your order is important to you, so we use Royal Mail’s tracked delivery service on all UK orders.
We also offer Royal Mail Special Delivery service, which for an additional fee offers guaranteed delivery the next day before 1pm.
*Royal Mail Tracked 24 and Royal Mail Tracked 48 services are 98% accurate but not guaranteed.
Orders placed before 5pm (Monday–Friday) are dispatched the same day. Orders placed on Saturday or Sunday are dispatched the following Monday.
International Delivery
We are pleased to offer worldwide shipping. For accurate shipping rates, please add the item to your basket. Once you enter your shipping address, you will be offered all available options.
For the EU, EEA, and the rest of the world, the total price shown at checkout includes only the outbound Royal Mail / DHL shipping cost. You will be contacted by Royal Mail / DHL regarding duties and taxes. If you refuse the parcel and do not pay the required customs or duties, the outbound shipping cost will be deducted from your refund.
On average, delivery to the EU takes 3–5 working days, and delivery to the rest of the world takes 5–7 working days.
More about delivery...
Need help?
Frequently Asked Questions
Yes — we are an Authorised Dealer for every brand we sell. All watches come with an official box, papers, and a full manufacturer’s warranty.
Every watch includes a manufacturer warranty. You’ll find more warranty info listed in the product description.
Orders placed before 5pm (Mon–Fri) are dispatched the same day. Order before 12pm on Sat for same-day dispatch. Free UK delivery is available on all orders, and tracking details are provided once shipped.
Yes — you have 30 days from delivery to return or exchange your item, provided it’s unused and in its original packaging.


