What is the difference between different mini spots?

FAQ
We have 1W and 3W LED Spots for customer choice, some LED mini spots need constant current LED driver and some new constant voltage LED Driver with 12VDC output.
Please check the LED mini spot specification before you buy it.  
If the mini spot show input voltage 3VDC@350mA, then you need a constant current LED driver with 350mA output. All LED spots must be connected in series. 
If the mini spot show input voltage 3VDC@700mA, then you need a constant current LED driver with 700mA output.  All LED Spots must be connected in parallel.
If the mini spot show input voltage 12VDC, then you need a constant voltage LED driver with 12VDC output.

For constant current LED driver, the output current is constant, but voltage is changeable according to how many LED spots connected.
For constant voltage LED driver, the output voltage is constant, but current is changeable according to how many LED spots connected.