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it says it's rated to 40 meters, which is good for most recreational diving. This would not apply for deeper dives. I'm curious to see what they have for using it with diver communication and collaboration. If one diver sees something of interest, they can easily notify other divers. I'm not sure if or how well Bluetooth works underwater? The haptic vibration would be useful to notify about reaching maximum bottom ti…
Bluetooth doesn’t work underwater. Water loves to absorb 2.4ghz signals. I dive with both my iPhone and Apple Watch Ultra and they can’t communicate underwater unless they’re actually touching.
The fact that water absorbs 2.4ghz light is what enables microwave ovens to heat water in the first place. So while it's an inconvenient property during dives, it's very convenient in the kitchen.