The power level is adjustable in firmware and is purported to be better in terms of power usage than Bluetooth with better audio peroformance to boot. I have it set to maximum power for my application though. It uses about 17 mA at this setting for transmitting and 23 mA for receiving. At the lowest setting, this drops to 15 mA for TX with a 20 dB drop in signal.

It would be cool to see something like this in headphones for sure.

Stu
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If you want it to break, buy Sony!