The TalkWithFish® underwater speaker is specially designed by Osmic Research Co, utilizing state of the art NXT® technology. It comes with an 8 foot cord and 3.5mm plug to fit the iPhone/iPod earphone output. It is a 4 ohm, 10 watt sealed underwater speaker to be used with the iPhone TalkWithFish App. It can also be used with any 10 watt amplifier to play underwater music in a swimming pool.
Frequency response is fairly flat over a 20-17,000 hz range.