Remove the old strap by pressing the release button

Every Apple Watch strap attaches with a small release button on the underside of the watch case. Hold your watch face-up in one hand and look at the band where it connects to the case — you will see a tiny rectangular button recessed into the metal.

Press and hold that button firmly for about one second. The strap will loosen immediately. Slide the band away from the watch case — it should come free with gentle pressure. If it does not move, you are likely not pressing the button hard enough; try again with more force.

Repeat this process on the other side of the watch to remove the second strap end. You now have a bare watch case with two open slots where the bands connected.

Key Takeaways

  • The release button sits on the underside of the watch case where the strap connects, and you must press it to unlock the band.
  • Both ends of the strap have their own release button, so you need to remove each side separately.
  • Apple Watch straps are designed to slide out horizontally once the button is pressed — do not pull upward or twist.
  • Any strap sold as Apple Watch-compatible will fit your watch model, though some older bands only work with older watch sizes.

Slide the new strap into the slot until it clicks

Take your new strap and align one end with the open slot on the side of the watch case. The strap should slide in horizontally — the same direction it came out. Push it in steadily until you hear or feel a small click. That click means the strap has locked into place.

Repeat on the other side of the watch with the other end of the new strap. Both ends must click into their slots, or the strap will not be secure. If one end does not click after you push it in, pull it back out and try again — sometimes the angle needs a small adjustment.

Check that both ends are locked before wearing

Once both ends of the strap are in place, gently try to pull the band away from the watch case. It should not move at all. If either end slides out easily, the release button did not fully engage and you need to remove and reinsert that end.

Tighten the strap around your wrist to your normal wearing position. The watch should sit comfortably without sliding up and down your arm. If the strap feels loose or moves too much, you may need to adjust the buckle or clasp depending on the strap style.

What to do if the strap will not click into place

If you push a strap into the slot and it does not click, the most common cause is that the strap connector is not aligned properly with the slot opening. Remove the strap completely and look at both the slot and the strap connector end — they should be the same width.

Wipe both the slot and the strap connector with a dry cloth to remove any dust or debris. Dust can prevent the connector from sliding all the way in. Then try inserting the strap again, pushing straight in without twisting or angling the watch.

If the strap still will not lock, the connector may be bent or damaged. Try a different strap to confirm the watch slots are working — if a different strap clicks in normally, the original strap is faulty and should be replaced.

Compatibility between watch models and strap sizes

Apple Watch straps come in two sizes: 38mm/40mm and 42mm/44mm. The size refers to the watch case width, not the strap length. You must use the correct size for your watch model, or the strap will not fit into the slots.

Check the back of your watch case — it will show your watch size. Then buy straps labeled for that size. Straps sold as "Apple Watch-compatible" from third-party makers will work as long as they are the right size for your model.

Strap length varies within each size category. If a strap feels too loose or too tight around your wrist, you may need a different length, but the connector size will remain the same and the strap will still click into your watch the same way.

Frequently Asked Questions

Can I use a third-party strap on my Apple Watch?

Yes. Any strap made for your watch size will work, whether it is made by Apple or another brand. The connector design is the same across all compatible straps. Make sure the strap is labeled for your specific watch size — 38mm/40mm or 42mm/44mm — or it will not fit.

What if I lose the strap I removed?

You can buy a replacement strap from Apple or from third-party makers. You only need to replace the strap itself, not the watch. Straps are sold individually or in pairs, and prices vary widely depending on the material and brand.

Do I need tools to change the strap?

No. The release button system requires only your fingers. You do not need any tools, and you should never use a tool to force a strap out — doing so can damage the watch case or the strap connector.

How tight should the strap be?

The strap should be snug enough that it does not slide around your wrist, but loose enough that you can fit one finger underneath it. If the strap is too tight, it can restrict blood flow. If it is too loose, the watch will move and may not read your heart rate accurately.