GPS Wireless Trackers X2 Pair 2G Network For Car, Bicycle, Motorbike

2G SIM Card Required (Check for 2G Accepted SIM Card) I don't really know much about it or how to use it. Bought around a year ago for bicycles but never actually got round to trying them or using them. Paid around £60 for both but selling cheap since getting rid of bicycles so no longer needs to be thought about. You do get 2 of them but do your research for 2G SIM cards before buying. Thanks

eBay