I pity the Diver that actually has to use this instrument. Cheap bracelet and the illumination does not glow! Owned it one week now its at the bottom of San Francisco Bay, the cheap strap broke right where it attaches to the case. I was in the middle of jibing my windsurfer and the strap just fell apart. Could not exactly reach out and make the save. Other complaints, how about luminescent markers that don't glow. Really bummed. Have not even seen the credit card bill yet.