This review is rather aimed at Amazon than at Aputure.
The device itself makes a good impression.
Nothing rattles and the battery cover firmly seated.
Only the supplied Stand is a little wobbly.
But the 4 stars.
But now to the Amazon.
My, this part as "Aputure MX1C Trigmaster Funkauslöser Flash Trigger for Canon EOS 500D450D / 400D / Pentax".
This is a false distinction of the device.
IMPORTANT FOR PENTAX CUSTOMERS!
According Aputure Aputure is the MX1C Trigmaster only for Canon.
For Pentax one needs the Aputure MX1P Trigmaster, which you do not have on offer.
Therefore clear for Amazon here only one star because of incorrect labeling of the device.
IMPORTANT FOR PENTAX CUSTOMERS!