SP100 SonarPhone with Transducer Pod. The World's Most Portable & Powerful Wi-Fi Fishfinder.. The SP100 T-POD is an ultra portable, Wi-Fi 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 4 hours on a single charge. Re-charging is easy, you can us