Seiko Astron SSH173J1 GPS Solar Médecins Sans Frontières - Limited Edition - W24232
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Delivery to UK
Wednesday 17 September 2025 -
Delivery to EU*
Tuesday 23 September 2025

This piece is limited to only 800 pieces worldwide, crafted from super-hard coated titanium and a white ceramic bezel insert, with impressive scratch-resistance. The ceramic bezel features Arabic numerals for the movement’s chronograph function. With a 43mm case, the hands and indices have a strong coating of Lumibrite, for clear visibility in dark conditions. Under the dual-curve sapphire crystal glass its energy efficient solar cell is within the white coloured dial, for charging from natural or artificial light without interference.
It features a new in-house 5X83 solar-powered GPS movement, that not only charges efficiently, but also features a 1/20th of a second chronograph function for measuring elapsed time. The subdial at 12 o’clock is for the chronograph feature, the subdial at 9 o’clock for setting modes, and the subdial at 6 o’clock for a dual-time feature. The Astron Médecins Sans Frontières GPS Solar Chronograph comes in its own special edition watch case.
Seiko Astron: the world’s first GPS solar watch – powered by light, automatically adjusted to your exact time through the latest satellite technology.
*In an actual product, the case back direction might be different from the photograph.
Although we do our best to ensure our pictures and descriptions explain our products as clearly as possible, sometimes you may find that when your item arrives it's not quite as you expected, or you may have simply changed your mind.
Don't worry - we have a 30 day change of mind guarantee on all our items.* All you need to do is send the item back in the post (you have to cover these costs) or pop into your local Chapelle branch so they can return the goods on your behalf. Products must be returned unused and with all original packaging. You are responsible for ensuring the product is not damaged whilst in your care.
*This excludes personalised, bespoke or specially ordered items. This also excludes any ring sizes outside our standard range; I-U for ladies and P-Z+1 for men.
Your chosen store will contact you once your order is ready for collection. In some circumstances we may supply rings in the nearest size available (especially if more than one ring is ordered) which can be adjusted to fit once the item has been paid for and the branch have confirmed the finger size. Items that need to be specially ordered are not available for this service and must be paid for in full before ordering. The store will hold your order for 1 week and then it will be returned to stock.
Please note the expected dispatch dates stated for each product as this indicates how long it will take us to dispatch your order. Express Delivery is offered for most items but this does not mean the item(s) will be dispatched any sooner than the expected dispatch date. Orders for multiple items will be dispatched together and are therefore collectively subject to the longest dispatch time stated. Parcels may be sent via courier which is a next working day service and requires a signature on delivery.
We offer international delivery within the EU and EAA on jewellery and most watches; sorry we are unable to dispatch heavy or bulky items and some selected ranges outside of the UK. Please be aware that local taxes and fees may be applied and the customer is responsible for paying these. International Delivery is a minimum of 3-5 working days from the expected dispatch date and may be considerably longer for more remote or distant locations.