The UK-based spy equipment manufacturer created the one-person submarine to plunge roughly 40 feet below the sea with a battery that lasts for about 60-80 minutes. The Mini-sub Spy Master enables the user to explore underwater without having to wear a cumbersome tank and BCD Jacket. The submarine is slow, with a speed of only 1 mile per hour. It is £ 12,000( about $19,000).
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