在想要不要收个这个。有人经验可以分享吗? http://www.amazon.com/BOOMYOURS-270%C2%B0Rotating-Vehicle-Blackbox-G-sensor/dp/B008GAMNBK/ref=cm_cr_pr_product_top#productDetails&tag=product_detail-20 还是从国内带个便宜些呢?