Here is a wireless fish-finder that works with your iOS or Android device to show you information about the fish in the water. Deeper is wireless and portable. It features a rechargeable battery. It is designed to help you fish like a pro. This smart sonar works in the depths from 0.5 m to 40 m. It shows water temperature, obstacles, and other useful information. You can use it in salt and fresh water.
Deeper lets you fish places other fish finders can’t reach. The companion application offers 15 min data history log, fish activity calendar, 5-day weather forecast, online maps, and social media support. The app is cloud friendly. The battery life is good for 4 hours. Sets you back $259 at the time of this writing.