The worlds most portable and powerful WiFi fishfinder! The SP100 T-POD is an ultra portable, WiFi transmitter system that has a self-contained battery. It can be pulled behind your boat, cast or thrown out from shore. Its unique shape allows the T-POD to track in the water perfectly straight at speeds up to 5 miles per hour. The SP100 has a transmit range of up to 100 yards and will run for up to four hours on a single charge. Recharging is easy, you can use either your computers USB port or the supplied USB wall plug charging cube. Water activated, the T-POD turns on and off automatically to save power. The SP100 has a single beam, 30 degree wide-angle beam signal using a 125 kHz transmit frequency. The SP100 T-POD is the most powerful portable WiFi transmitter in the world, and it easily fits into your pocket so you can take it anywhere, and yet it weighs only four ounces! SonarPhone will rival most high-end sonar on the market today. Using Patented WiFi signal technology to transmit a full color, HD quality signal right to your smart device. You dont need cell phone coverage to use it, the SonarPhone will work anywhere in the world. SonarPhone creates its own WiFi hotspot and you can share your signal with as many people as you wish, the software App is downloaded for FREE from the App Store or Google Play and works with both Android and IOS systems. The SP100 comes with a neoprene armband so you will have easy and safe access to your phone display at all times. Compatibility: iOS 4.3 (iPhone, iPad) and Android 2.0 Transducer: Water activated transmitter Sonar frequency: 125kHz Single Beam, 30 Max. depth range: 120' Power source: 3.7V rechargeable lithium-ion battery. Runs for four continuous hours per charge. USB port charging system. Power output: 400 watts peak-to-peak Transmit speed: 100 Mbps Screen controls: Touchscreen controls