I can advise NOT to get a ring RGBDC50.all looked good on the box but would freeze up after about 30 mins .took it back and guy in the shop said the other 2 he sold also came back.
so I am still looking also
Russ
I have 2 of these back and front with 32gb stick in them, quality night and day bang on , plug into cig lighter and come on with the engine. Well worth the money, once their set up you never need to touch them. You might get the odd time were they switch off just after turning the engine on but a quick pull of the cig lighter in out it's back on.
All my relatives have them after I took the stick out and showed them the footage on the pc. The battery version just means you can take it out the car to record but you have a phone for that. Eventually you will have to replace that so I opted for the capacitor version. This means it always needs power like a charger or a usb to pc.
I ordered off eBay straight from the manufacturer , . With 2 Samsung EVO 32gb sticks total cost was about £90 all in . I've just bought 2 for my sons car , again back and front brilliant.
tip, get the capacitor version then you've no need to change the battery as you don't need them.