Here is another great electronic development for the iPOD. It’s a transmitter and speaker combination designed to float in a pool. The Floating iPOD Speakers and Transmitter can be used up to 150 away and provide a signal. You can add up to 10 speakers on this system. Each speaker is 5 watts and 3 inches in size. The overall diameter with the protective casing measures 6 ½ inches. The transmitter runs on 900 mhz so it should not interfere with a home’s wireless network. Each pool speaker runs on 6AA batteries and is designed to last up to 10 hours. There are LED lights that add ambience for night time use. Price: Speaker with Transmitter – $149; Each Additional Speaker – $100.