Suunto,
1. How long does the D9 Tank unit/transmitter last?
2. How do I know that it is time to change the batteries for the Tank unit?
3. Is the change done by the dealer or does it have to be sent back to Suunto?
1. How long does the D9 Tank unit/transmitter last?
2. How do I know that it is time to change the batteries for the Tank unit?
3. Is the change done by the dealer or does it have to be sent back to Suunto?