Many useful products have gone on sale this past weekend, including tablets, phones, chargers, batteries, earbuds, speakers, and more or less anything you could possibly want to pair with a mobile handset. But we've had enough of useful - now it's time for cool. Brookstone's Rover 2.0 wireless spy tank is now available for $50 off. You can get it from Amazon for just $99.99.

Update: Amazon's price has changed to match Brookstone's.

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