"whisky-dave" wrote in message
...
Mine lasted 6 months, but then it has an altimeter and barometer on it
which use a lot of power.

Why did yuo feel the need to get one with an altimeter ?
Do yuo often need to know what height you are at say when drinking a pint
sorry taking sips. Maybe it's all part of your problem of hitting your
head on low things.

An altimeter is a standard part of a GPS receiver which most phones have:
they give 3D coordinates as lat/long/alt. But if your phone also has a
barometer then the phone *may* be getting its altitude reading from that,
though it will need to be corrected for changes in barometric pressure, as
for an aeroplane altimeter.