Crafter Blue

CW05 - Modded Watch Movement by Certiga Works

  • Parallel to Seiko 4R35 / NH35 caliber.
  • Black date dial at 3 o'clock
  • It has a power reserve of up to 41+ hours.
  • It offers an accuracy of -20~+40 sec per day.
  • Hack-second or stop-second feature allows setting the time precisely.
  • The product consists of 24 Jewels.
  • The movement type is automatic.
  • Frequency/Vibrations per hour are 21600 BPH.
  • Function: 3Hands, automatic and manual winding, and date function.
  • Winding direction: Both winding with one wat clutch. 
  • The diameter is 27.40 mm.
  • Antimagnetic: >4800 A / m

Planning to build your next mod? Don’t forget about the watch movement. Check out our CW05 movement. It’s based on the reliable, workhorse Seiko movement: the NH35. 

The best thing about the NH35 movement is its reliability and accuracy. Under normal conditions, its accuracy is merely at -20 to +40 seconds a day. That’s why we based our CW05 on NH35. Then, we redesigned its rotor and blue plating screws to add a touch of individuality and class to your modified timepiece. The result? A 24-jewel timepiece that serves accurately and has an upgraded look that stands out from the crowd.

The CW05 is a hand-windable and automatic movement, making it appealing for most watch modders and enthusiasts. It features a second hand stop function to ensure you can synchronize your modded watch whenever necessary. And it’s available in two coating colors to suit various preferences. You can have it in either rhodium or gun coating. 

So if you need an accurate movement for your next mod, go for CW05. You can’t go wrong with this workhorse movement with manual & automatic winding. Plus, it’s compatible with most watches. It gives you the flexibility you need to complete your next or dream mod.

Product Highlights:

At a glance, here are the incredible product features of CW05: 

  • 24 jewels 
  • 21,600 vibrations per hour
  • Power reserve of over 41 hours 
  • Antimagnetic
  • With a manual winding capacity
  • Has automatic winding with a ball bearing 
  • With second hand stop function
  • With date display with quick date correction
  • Available in two coating colors: rhodium coating & gun coating 


Start collecting the pieces you need for your customized or modified watch. Place your order for CW05 online today. Have questions about this product? Feel free to get in touch with us. 

Fit Models:

Seiko SKX series, Seiko SRPDXX series 


Rotor Color:
Calendar Style:

What is Crafter Blue strap made of?

Each Crafter Blue strap is made of vulcanized rubber. Vulcanized rubber is a material that undergoes a chemical process known as vulcanization. This process involves mixing natural rubber with additives such as sulfur and other curatives. Vulcanization makes rubber much stronger, more flexible, and more resistant to heat and other environmental conditions. Vulcanized rubber makes both soft and hard objects, ranging from rubber bands to bowling balls. In fact, almost any rubber object consists of vulcanized rubber. Vulcanized rubber is stronger than non-vulcanized rubber because its bonds are made of cross-links at an atomic level. This allows vulcanized rubber to stand up to more stress and damage. Vulcanized rubber is also more rigid than non-vulcanized rubber, so it is more stretch-resistant in the first place. However, vulcanized rubber has the same elasticity level as non-vulcanized rubber.


How quickly are orders processed?

Excepts the pre order items, all orders are guaranteed to ship within 48 business hours. However, if you placed your order over the weekend, it will be shipped next business day. Once your order ships, you will receive an automated tracking email from us within next 48hours (2 more business days will be expected). If it’s been more than 48 hours and you haven’t received tracking, please feel free to contact us here .


Shipping Destination

We ship worldwide. If you find that your location is not on our shipping list at checkout, please contact us HERE for further assistance.


When can I expect to receive my order?

Shipping time depends on your destination:

5 – 7 business days​

EU countries:
10 – 12 business days

Asian countries:
5 – 7 business days

10 – 12 business days

Australia & New Zealand:
10 – 12 business days

Middle east countries:
10 – 12 business days

Latin American countries & Russian:
at least 14 days

Hong Kong:
within 3 business days


Other Charges and Custom Matters

Customers are liable to all the customs, taxes and tariffs that may incurred. Furthermore, customers shall be fully responsible for assuring that the product can be lawfully imported to the destination(s). When purchasing from Crafter Blue, the recipient is the importer of record and must comply with all laws and regulations of the destination country. Additional charges for customs clearance must be borne by the recipient; we have no control over these charges and cannot predict what they may be. Customs policies vary from country to country; you should contact your local customs office for further information. When customs clearance procedures are required, it may cause delays beyond the estimated delivery. Crafter Blue shall not be responsible any failure in passing the customs inspections nor do we take responsibility for items taking extended time processed by the customs.


Return Policy

Correct details and a valid shipping address are required when you are making purchase. Customers are responsible for the cost of the lost mail. No refund or reshipment will be given, if they have input incorrect information.

If you are not satisfied with our products, we do accept returns for any product in unused condition (Note 1) within 7 days of customer’s receipt of goods. All refunds are subject to a deduction of $20.00 and the original shipping charges incurred (Note 2). For returns, the customers are responsible for the following issues:

Product returns are the responsibility of the customer. Please ensure that returned goods are packed in original package and handled carefully.

Customers are responsible for shipping charges of product returns. Traceable shipping method is highly recommended.

Once we receive the return products, refunds will be processed using the same method as the original payment method.

Note 1: The product has NOT been mounted, worn, bent, altered, stained or damaged.

Note 2: Full refund (including original fee and waving return fee) will be processed for items proved to be defective ONLY.


How to return an item?

How to return an item?

Please email your request from HERE. In your email, please let us know your service code printed at the back of the international warranty card. You must return the item within 7 days of customer’s receipt of goods.



Crafter Blue warrants products that are defective in material within 12 months upon purchase. Crafter Blue shall not be liable to any incidental or consequential damages resulting from daily use. If manufacturer defects are found within 7 days of customer’s receipt of goods, full refund will be arranged.

Note 3: No warranty will be applied on any gift purchase or private seller. Unless the purchaser can provide a valid order number & a photo of the warranty card (both information are required) 



Mon-Fri: 09:00-18:00hrs (GMT+8:00)
Sat-Sun & public holiday: Off

All emails will be replied within 2 business days.

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