Note: This GPS jammer can only block GPS signal, and CANNOT block GSM/GPRS signal which is usually used by some GPS trackers! This is an original device from the original factory. There are other devices that look the same but they have a very weak signal cover. They cover max 2M instead of 8M.
This jammer can only block GSM(2G) and GPS signals, and can't block cell phone 3G 4G signals Color sent by random: This jammer will be sent by random color (black/champagne), depending on the actual stock status!