Yes, Micromax Canvas Infinity does have the multi screen functionality.
Micromax Canvas Infinity is available only in black color as of now.
No. Micromax Canvas does not the Gyroscope sensor.
Yes, Micromax Canvas Infinity does have a dedicated MicroSD card slot. You can use 2 sim cards and 1 memory card at the same time in this phone.
It takes about 2 Hours to fully charge this phone. However, you can use Sony CP-AD2 fast charger to charge this phone in almost half time.