Turn your watch on its back.
On the inside of the bracelet you will find a small quick release fastener. Push it towards the middle of the bracelet.
Hold down the clasp and carefully remove the bracelet without scratching the case.
Press and hold the quick release on the new bracelet.
Insert the bar into the left hole in the housing.
Once the right bar is in the correct position over the right hole, carefully release the quick release.