Hi
Before buying Apple Watch, measure your wrist circumference and refer to the Apple Watch Sizing Guide (which compares all Apple bands):
- http://www.apple.com/shop/watch/sizing-guide
All presently available retail configurations of watch case + strap are available to view online. Where a Sport Band is included, the band can be configured for either S/M or M/L length:
- http://www.apple.com/watch/buy/
A longer Sport Band (with M/L & L/XL configurations) is available to purchase as a separate accessory in selected colours:
- http://www.apple.com/shop/product/MJ4N2/42mm-black-sport-band-with-space-black-s tainless-steel-pin
To ensure the best fit, you may find it most helpful to schedule a try-on appointment at an Apple Retail Store:
- Try On Apple Watch - Make an Appointment
Bands are also available to buy as separate accessories, including additional links for the link bracelet.
- http://www.apple.com/shop/watch/bands
- Change your Apple Watch band - Apple Support