There are two types of D-buckles, regular and special.
Step
Adjusting the length of the strap
1-1. Raise the buckle (metal fitting) and pull out the pin from the hole.
CAUTION
Be careful not to injure nails with the buckle (metal fittings).
1-2. Slide the buckle (metal fitting) to the desired hole.
1-3. Insert the pin into the hole while closing the buckle (metal fitting).
CAUTION
Please make sure that the buckle (metal fittings) is firmly fixed.
Putting on the strap (the watch)
2-1. After passing the strap through the free ring, pinch the buckle (metal fitting) with two fingers to close it.
Take off the strap
3-1. Press the buttons on both sides.
In this video, you can watch the following steps: "Take off the strap" → "Adjusting the length of the strap" → "Putting on the strap (watch)".
Step
Adjusting the length of the strap
1-1. Open the buckle (metal fitting) and pull out the pin from the hole.
CAUTION
Be careful not to injure nails with the buckle (metal fittings).
1-2. Slide the buckle (metal fitting) to the desired hole.
1-3. Push the pin into the hole while closing the buckle (metal fitting).
CAUTION
Please make sure that the buckle (metal fittings) is firmly fixed.
Putting on the strap (the watch)
2-1. Close the buckle (metal fitting) on the side with the free ring.
2-2. Align the other buckle (metal fittings) with buckle of 2-1.
2-3. Close the buckle by pinching it between two fingers until it clicks.
2-4. Pass the band through the free ring so that the buckle (metal fitting) does not come off due to the tip of the strap getting caught on clothes etc.
Take off the strap
3-1. Press the buttons on both sides.
In this video, you can watch the following steps: "Take off the strap" → "Adjusting the length of the strap" → "Putting on the strap (watch)".
Clasp with Extension Structure
Mainly used for diver's watches, the length can be easily adjusted when wearing the watch over a wet suit.
Normal state
Stretched out
A
Safety cover
B
Push button
C
Top cover
D
Extender
E
Hook
a
6 o'clock side
b
12 o'clock side
Step
Take off the bracelet
1-1. Raise the safety cover [A] .
1-2. Press the bush button [B], and open the top cover [C].
Make the bracelet longer
2-1. Lower the safety cover[A],and open the extender [D].
2-2. Release the hook [E], and lengthen the band.
Attach the bracelet
3-1. Raise the safety cover [A], and close the top cover [C].
3-2. Close the safety cover [A].
Step
Take off the bracelet
1-1. Raise the safety cover [A], and open the top cover [C].
Shorten the bracelet (return to normal)
2-1. Lower the safety cover [A].
2-2.Hang the hook [E] on the safety bar [A] and, close by pinching between two fingers .
*See how the hook hooks into the safety cover from another angle.
Attach the bracelet
3-1. Raise the safety cover [A].
3-2. Close the top cover [C], and the safety cover [A] in this order.
In this video, you can see ”Make the bracelet longer” → ”Shorten the bracelet (return to normal)” in succession.