Hi I am looking to get my husband a watch that he can use when out walking, birding etc. for our 40th Anniversay. One that includes a Compass as he walks a lot on Dartmoor. I have looked at Solar ones and am not sure about how long the battery etc lasts I have read that it has to be replaced aafter about 2 years back at the manufacturers at a cost of £45. As they cost a lot to start with I don't think he will get same replaced. I was looking at a Suunto but am not sure about this. Can anyone help