It is an absolute fabulous device, it does what it should. Very accurate, and even the half deaf like myself can hear it when it goes off as programmed. The one downside of the Optima is that the plastic enclosure is absolutely crap. I had mine for about 9 months brand new and I really have so much respect for my equipment that i barely want to touch it if I'm not skydiving - but yet my Optima's enclosure is cracked and the insides wants to fall out. This is the same for a couple of fellow skydivers @ my local DZ and the only fix for this apparently is Super Glue!!! I will be testing a NEOXS soon. Main reason for that is that it's got a Aliminium casing at least and hopefully won't fall appart in a couple of months time.
