It looks like every kid’s dream: a radioactive wristwatch. Site Wrist Dreams have reported that Japanese company Active Reactor has just released a wristwatch that tells the time using lights on a radiation warning sign. Okay, so telling the time is difficult. And okay, neither is it actually radioactive, nor will it let you turn into a spandex clad superhero. But your friends don’t need to know that. It’s available from TokyoFlash and costs a pricey $112.67.