Chinese smartphone giant Xiaomi has launched a new action cam to rival the GoPro Hero — at least, in China anyway. The Yi Action Camera won't be available outside of Xiaomi's home country, but is selling for the impressively low price of 399 CNY (just $64) and offers some eye-catching specs to match. The new device shows the company's ambition to move beyond the smartphone market, and offer consumers the chance to buy in to a larger ecosystem of Xiaomi products.