The Gameboy Pocket Sonar

Chris Berrow and Leigh Milner discover the Gameboy Pocket Sonar, released more than 20 years ago. 

Chris - We've just discovered that the game boy pocket sonar is a thing that existed quite a long time ago actually. Do you want to tell us about?

Leigh - Okay, are you sure it's something we need? If you want to go fishing, let me just read you this, right? Apparently it's a peripheral for the Nintendo Gameboy made by Bandai that used sonar to locate fish up to 20 meters away. If you're wondering about on the water for the sport fishing... it contains a fishing mini game. You can get hold of one right now if you want. It's $127 on eBay.