Damselfish
Contributor
How much in bitcoin?
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One ping, one ping only
It's useful if you are not holding on to your buddy 100% of the time.
E.g. my wife once watched an eagle ray raise from the sand, shake the silt off, and slowly move away while I was photographing a rockfish or something around the corner and a couple metres down. So we have a pair of ultrasonic pingers now.
Do you have a link to the pingers you use?
It looks nice and the ping concept is interesting but when Anni pings me does it tell me where or what direction she happens to be? Otherwise isn’t it just an electronic tank banger?