Hi!

I'm going to buy a Nikon Coolpix 5900 with waterproof case; I want to use it 
for underwater video recording. I know that this camera needs Secure Digital 
Memory card with a minimum bitrate of 10mb/sec. It's important for me that 
the memory card has enough space and is sufficiently fast; so this is my 
question: should I buy an SD Sandisk Ultra II 2Gb 66x (9mb/sec writing 
speed) that allows me to record 30 minutes video length, or a SD Sandisk 
Extreme III 1Gb 133x (20mb/sec writing speed) that allows me to record 15 
minutes video length without losing frames risk?

If someone knows what I'm talking about and can help me, I'll be grateful.

Besides, if the SD 2gb 66x results good, the camera's battery will last 
enough? Because if it lasts 30 minutes (calculated as the life-time battery, 
in the case of countinuos recording),  surely I will buy the Extreme III 
cause I must consider, not only the recording time, but also the times that 
I will spend whatching previews and erasing previous videos.

Tahnks for your attention.

Ryo

p.s. Sorry for bad english, but i'm from Italy