Get Omega Speedmaster Hesalite Scratches UK. This is even if you are very careful and only have your cuff rubbing against the glass. Snag the most popular watches at an amazing price.
Omega did offer to swap the hesalite out for a newer, harder material—sapphire crystal—however nasa determined that that the failure characteristics of acrylic were favourable to the propensity of sapphire to shatter in the same way as glass.
The fact you can polish out any scratches that may occur, and if replacement hesalite is needed it much less expensive than sapphire. My press uses plastic (delrin) parts so it shouldn't scratch but i use bits of foam to protect my watch anyway. Hesalite, being a form of plastic, will naturally acquire scratches over time. Discover the elegant style of the speedmaster speedy tuesday steel watch (311.32.42.30.01.001), and buy it online on the official omega® website!