keeps perfect time, very comfortable, thin and light weight, very easy to read, lights up for as long as you depress the crown, scratch resistant, water proof -- what more can you ask?  Oh yes - very reasonable price!
Other reviewers mentioned scratching the crystal - I've worn mine every day for months without a problem, but I wear it face toward me, and it's so thin my sleeve covers it.  The velcro strap allows a perfect fit.