# Watch User Manual

**By AdminMy Store** · 2026-02-25

## **Water Resistance Reminder**

All Watchbrick timepieces are rated at **3ATM**, suitable for **light daily use only** — such as hand-washing or light rain.  
**Do not** wear the watch while **showering, swimming, or submerging in water**.This is especially important for models with the **VK63 quartz chronograph**, as they contain a battery-powered module that may be affected by moisture.

## **Crown Instruction**

This watch features a screw-down crown.  
Before setting the time or date, **please turn the crown counterclockwise to unscrew it** until it pops out. After adjustment, push the crown back in and screw it clockwise to secure the water resistance.

## **Before You Start: Wind Your Automatic Watch**

All automatic movements (including NH34, NH35, NH36, Miyota 8285) require manual winding before first use, or after sitting idle for an extended period.

**To wind your watch:**

-   Make sure the crown is in the pushed-in position (Position 0).
-   Turn the crown clockwise (away from you) **minimum 55 times** to build up power in the mainspring.
-   You should see the second hand begin to sweep smoothly.

## How to adjust watch strap?

Please see our full step-by-step guide here: **[How to Adjust Watch Strap](https://www.watchbrick.com/blogs/news/how-to-adjust-custom-watch-strap-guide "HOW TO ADJUST SEIKO MOD STRAP")[s](https://www.seikomod.com.au/blogs/news/how-to-adjust-seiko-mod-straps "HOW TO ADJUST SEIKO MOD STRAP")**

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## Watch Movement Operation Manual：

**[NH34 GMTMOD USER MANUAL](https://cdn.shopify.com/s/files/1/0749/4929/6383/files/NH_OM.pdf?v=1765961039 "NH MOVEMENT USER MANUAL")**

**[NH35 JUSTMOD/SUBMOD/ETC. USER MANUAL](https://cdn.shopify.com/s/files/1/0749/4929/6383/files/NH_OM.pdf?v=1765961039 "NH35 USER MANUAL")**

**[VK63 CHRONO-TONA,ETC USER MANUAL](https://cdn.shopify.com/s/files/1/0749/4929/6383/files/VK63_OM.pdf?v=1765961039 "VK63 USER MANUAL")**

**[NH38 USER MANUAL](https://cdn.shopify.com/s/files/1/0749/4929/6383/files/NH38_OM.pdf?v=1765961039 "NH38 USER MANUAL")**

**[NH72 USER MANUAL](https://cdn.shopify.com/s/files/1/0749/4929/6383/files/NH72_OM.pdf?v=1765961039 "NH72 USER MANUAL")**

**[MIYOTA 8285 USER MANUAL](https://cdn.shopify.com/s/files/1/0749/4929/6383/files/8285_OM.pdf?v=1765961038 "MIYOTA 8285 USER MANUAL")** 

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### 🧭 Final Tips for All Movements

-   Always pull/push the crown **gently**—avoid applying side force.
    
-   If your watch is stopped, **wind it fully before wearing** to ensure smooth operation.
    
-   For automatic watches (NH34/35/38/72), regular wear keeps the movement powered.
    
-   Keep watches away from magnets and large temperature swings to preserve accuracy.
    

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### 📦 Looking for More?

Explore our full collection of NH35, NH38, NH34, and VK63 builds at **[Watchbrick.com](https://www.watchbrick.com)** — every piece is engineered with performance and personality in mind.

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> Source: [WATCHBRICK](https://seikomod.com.au/blogs/news/how-to-set-seiko-mods-movement)