Officine Panerai

Hello, I really like this piece along with the yet to be released Pam 307. On both of these depth gauges they have a onboard computer to run the depth gauge system. I have two questions about these watches............. Is there a way or method of telling ... 

...have a battery life indicator, though I don't know how it functions. Probably by holding down the recall button. The good thing about the depth indicator is that it matches the depth rating...so you know when to expect it to flood....

Battery on the Depth Gauge is a Lithium Ion Battery - Lasts for 500 diving hours...when it is low, you can't use the depth gauge, it will just go to 12 o'clock position then back to off...Great Watch! Lovin' mine...Take Care, Craig