Just got mine today [took 3 weeks], plastic case not fully compatible with MD80 mountings [nearly fits, but could be lashed with black electricians tape].
Cheap construction, won't take much hammer! Picture quality OK, same as MD80 - but not tested it on bike yet.
Took a bit of faffing about to get it to read 8Gb card - but working OK now. Has a reset button that I broke by jabbing it too hard, so had to remove the four [although they only fitted three] screws to do a reset, suspected the Xtal cables were shorting to the main control IC.
Has a time & date function which can be set by dropping a config file onto the card [My MD80 does not have this]
Probably less waterproof than the aluminium MD80, so will probably be using more electricians tape to make it rain proof.
It also comes with a dodgy 2-pin charger - chucked this straight in the bin [wouldn't trust it - advise anyone else who buys one to do the same] - will be charging from USB port.
Despite these drawbacks OK for £11 delivered if you like to mess .....