Review on Casio Men's 'G-Shock' Resin Sport Watch with Quartz Movement by Christy Jordan

I bought the watch because it is rated for diving to 660ft. However, you must be in a bright, direct light source to see the numbers and letters. It has a way of illuminating the dial, but the manual states that the battery only lasts 2 years if the backlight is limited to 3.5 seconds per day and the alarm is limited to 20 seconds per day. It goes on to say that each illumination lasts an average of 2 seconds. Finally, it states that if more battery power is used than stated above, battery life will be reduced accordingly.