








Watchmaking kit - Diver One Skeleton - Ref. 231301
If you are visiting our shop from the UK, prices shown include UK VAT.
If you are visiting us from outside the UK, prices are displayed excl. VAT and regional taxes and duty may be due and payable by the customer. Please see our full shipping & tax information below before ordering.
Automatic watch movement

Text and video instructions

Comprehensive tool kit

Watchmaker Support Service
Building an automatic watch is a challenging task, but with our complete sets you will receive the prepared components for assembly, a full tool kit and detailed step by step instructions. All you need is a steady set of hands and a bit of patience, to complete this kit!
The D1 now as skeletonized diver watch with an ruthenium grey NH-72A automatic watch movement. To provide you with full visibility, this kit is using a thin sapphire dial, enabling you to see every part of your automatic watch movement underneath. Inside the 41mm stainless steel case, you will also find our silver polished diver hands. Hour markers (printed) and hands are filled with extra strong lume to increase legibility in low-light environments. This kit is delivered with either a fully water resistant, soft and comfortable FKM strap (with quick release spring bars) or a stainless-steel bracelet, both in 20mm.
Containing all parts, tools and instructions our kits are an ideal start into the world of watchmaking. Learn more about the way a watch works, the history of watchmaking and how to assemble your own automatic watch at home.
All our kits contain a detailed instructions book as well as access to our step-by-step video guides available on our homepage to assist you throughout the assembly.
Our kits are available as Full watchmaking kits or as No tools variants:
- Full watchmaking starter kit includes watch components (case, dial, hands, movement, and strap), a full tool kit (watch hand levers and press, movement cushion, friction ball, cleanroom products, dust blower, Rodico, precision tweezers, table mat, screwdriver (pilot watches only), watchmaker’s loupe and headwire) and detailed instructions (printed booklet in each kit and access to our step-by-step video guides via our homepage)
- No tools kits include only the watch components and the instructions (we recommended to start with a full DIY kit to ensure you have all the right tools for your first assembly)
Safety notice: Please note that these kits are not toys and are unsuitable for children of any age. They contain small parts which can be swallowed as well as sharp tools. Please always handle the tools (especially tweezers) with utmost care and caution. Keep the ends away from your eyes, skin or any other person or animal.
Size
Width (bezel) - 40.8mm
Lug to lug - 48.5mm
Height - 12.9mm
Weight (approx.)
106g (FKM strap)
156g (Steel strap)
Case
Stainless steel diver case (41mm size) with see-through case back (water-resistant to 10 ATM)
Bezel
120 click ceramic bezel (uni-directional)
Crystal
Scratch-resistant sapphire glass
Dial
28.5mm transparent sapphire dial with lume printed hour indexes
Hands
Matte black diver hands (lume filled)
Movement
TMI(SEIKO) NH-72A automatic watch movement with 41 hours of power reserve and 24 jewel bearings.
Strap
Black FKM strap (75/125mm) with quick-release spring bars or stainless steel bracelet (micro adjustment clasp, screwed-in links)
Your kit components

Fully Transparent
Revealing all the details of the movement below, this 28.5mm sapphire dial is equipped with lume printed index and hour markers.

Iconic diver case
41mm stainless steel case with sapphire crystal, exhibition case back, ceramic bezel insert (120-click unidirectional bezel) and screw down crown.

Made in Japan
The NH-72A is an automatic, skeletonized watch movement made by TMI (a subsidiary of the Seiko Group) boosting 24 jewels, a 41 hours power reserve and hacking seconds.

Strap or Bracelet
Completed by a soft, water resistant FKM strap (quick release spring bars) or a solid stainless-steel bracelet with screwed-in links and micro adjustment clasp.


Everything you need in one box
Our watchmakingstarter kits
Our kits are shipped from our London workshop with Royal Mail and we aim to send them within 1-2 business days.
International orders are shipped via UPS or a similar courier. Orders are shipped excl. UK tax (deducted at check-out). Please note that customers will remain liable for local taxes and/or import duty for deliveries outside the UK.
For more information, please follow the link below to view our shipping policy.
Safe & Fast delivery
Shipping Policy
Our kits are shipped from our London workshop with Royal Mail and we aim to send them within 1-2 business days.
International orders are shipped via UPS or a similar courier. Orders are shipped excl. tax - please note that customers will remain liable for local taxes and/or import duty for deliveries outside the UK. Import payments and process are handled by the courier and we have no influence over this process. Incurred costs on your behalf are not refundable.
For more information, please follow the link below to view our shipping policy.
