行车记录仪（Mirror dash cam)

转New open box 的行车记录仪，从Amazon 买来的，$40转，链接如下
VanTop H612 12" 2.5K Mirror Dash Cam w/Voice Control, GPS Tracking, IPS Full Touch Screen, Waterproof Backup Rear View Camera, Loop Recording, Night Vision, Parking Monitor for Cars https://www.amazon.com/dp/B08DF94H7D/ref=cm_sw_r_cp_api_i_X4jTFb0811679?_encoding=UTF8&psc=1
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这个安装麻烦吗？为啥不能直接退？