Apple has just launched an all-new Apple Watch Series 4 with larger displays than the previous three generations of the Watch. The new Apple Watch comes in 40mm and 44mm sizes.

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The good news is that your Apple Watch 38mm and 42mm bands will work with the new Apple Watch Series 40mm and 44mm. Apple mentioned this on stage at the Apple Watch Series 4 launch event.

All your 38mm Watch Bands will work with the 40mm Apple Watch Series 4, and all 42mm Watch Bands will work with the new 44mm Apple Watch Series 4.

Apple also introduced some new Watch Bands at the launch event. You can pre-order the new Apple Watch on Sept. 14th, and it’ll be delivered by Sept. 21st.