
TONA MOD - PRISMA
€259.00
incl. VAT, free shipping
40 mm · VK63 Meca-Quartz · Sapphire Crystal · 316L Stainless Steel
€259.00
€259.00
incl. VAT, free shipping
You can also pay in 3 instalments with Klarna
Hand-assembled · Delivery 10–12 days after ordering
Quality takes time.
The Tona Mod Meteorite is a Seiko Mod chronograph with a meteorite-look dial: a crystalline cross-hatch modelled on the Widmanstätten structure of iron meteorites. We make the pattern, not the provenance: no meteorite material goes into this watch. You get the look, not the rock. We assemble every one by hand at MedoMods.
The cross-hatch echoes the crystal structure that grows inside iron meteorites as they cool. Recreated, not cut. No Gibeon, no space rock, no provenance story. The pattern is the decision here, not the material.
The Seiko VK63 Meca-Quartz hybrid movement drives the Tona Mod: the chronograph runs mechanically, so you feel the pusher engage instead of watching a display jump. The time itself runs on quartz.
40 mm stainless steel case: compact enough to sit under a cuff, present enough to carry a dial like this
Sapphire crystal: shrugs off scratches from keys and door frames
Super-LumiNova on the indices: readable in low light
Screw-down crown, 5 ATM water resistance: rain and splashes are no problem
Tachymeter bezel: the classic racing scale for speed or units per hour
904L stainless steel bracelet: the same steel grade used in high-end Swiss production, adjustable from 14.5 to 22 cm, 20 mm lug width
Right for you if you want a sport chronograph that gets noticed and you judge a dial by how it looks, not by where it came from.
Hand-assembled by MedoMods. Ships worldwide with tracking – within the EU with no customs surprise. Questions about sizing or the dial? Message us before you order, we answer fast.
Secure payment
A Seiko mod is a modified watch that uses an authentic Seiko movement, combined with third-party high-quality parts. Most of our watches come in stainless steel with sapphire crystal.
It usually takes 10–12 days from order to delivery. The reason: we build every watch by hand only after you order it. It then goes through quality control, and only after that do we ship it. With Priority Build (an optional extra for €9.99, chosen on the product page) your watch moves to the front of the bench.
Absolutely. Send us an email with your order number and full name after ordering, stating your desired design or that you want to remove the logo. You can also leave a note at checkout, or contact us before ordering.
Yes. Every watch comes with a 2-year warranty from delivery. It covers manufacturing defects and functional problems under normal use. It doesn't cover scratches, damage from opening the watch, or water damage. If your watch is rated 5 ATM, hand-washing and rain are fine. Avoid diving, hot water and showering.
MedoMods is run by AM GbR, based in Leimen near Heidelberg, Germany. Our address and VAT ID are in the legal notice. You pay through Stripe, for example by card, PayPal or Klarna, and your card details never reach us. For deliveries to the UK, USA and Australia, we offer 14-day returns from delivery. We do not charge an additional restocking fee. We issue refunds within 4 calendar days after receiving the return. Every watch comes with a 2-year warranty. You can find our seller ratings on eBay.
We push prices down as much as we can. We believe many comparable watches are overpriced because shops bundle extras (like extra straps) into the price. We let you choose what you want, so you only pay for what you actually need.
Yes. We source from suppliers who sell authentic Seiko movements. The specific movement is listed on each model’s product page. If you suspect that your watch contains the wrong movement or a non-genuine one, contact us with your order number and a description.
Yes — all our watches are built by hand.
MedoMods · 4.5 / 5 · 12 customer reviews
MedoMods · 5.0 / 5 · 1 Customer review
„Un détail ressort dès les photos : le motif météorite et la disposition chronographe sportive. Au poignet, l'ensemble est encore plus harmonieux.“
Chloé Faure
France
MedoMods · 5.0 / 5 · 1 Customer review
„Me preocupaba que solo luciera bien en fotos. De cerca me gusta especialmente el diseño deportivo del cronógrafo y el diseño de meteorito.“
Adrián Navarro
Spain
MedoMods · 4.0 / 5 · 1 Customer review
„Det som gjør denne varianten spesiell for meg: den sportslige kronografskiven og meteorittmønsteret. Klokken er behagelig å ha på.“
Astrid Solberg
Norway

The craft behind it
Every watch is assembled individually, regulated and inspected before it ships.
A look inside the workshop