I bought an XR-1 as a bottom timer, and it's only so-so.
Per your questions,
1. Gauge mode and unit of measure are selectable. Gauge mode, however, has to be reset everytime the computer activates. So at least every dive day.
2. It does have a calendar. However, in gauge mode, dive logs are not maintained. Gauge mode is just that - a gauge. No logging.
Per your questions,
1. Gauge mode and unit of measure are selectable. Gauge mode, however, has to be reset everytime the computer activates. So at least every dive day.
2. It does have a calendar. However, in gauge mode, dive logs are not maintained. Gauge mode is just that - a gauge. No logging.