4 ms·

Bluetooth doesn't work underwater as far as I know.

• wizofaus 4y ago
  Apparently it does but because of the frequency used the signal gets so attenuated that the range is more like 10cm maximum. And both devices would need to be completely submerged.
• Daneel_ 4y ago
  Wireless air systems work in the kHz range, while bluetooth is up in the GHz range unfortunately. I would love to see a system that uses ultra-high frequency noise in combination with the watch microphone, but it's doubtful manufacturers are going to want to support that.