Light bulbThe light bulb supported by Viva is supplied by Zipato. It has separate warm white, cold white and color LEDs, fits into regular E27 socket and is able to produce light intensity comparable to 60W incandescent bulb using approx. 6W. The standby power consumption is 0.45 W.

Installation of a light bulb is done by selecting Devices from the menu in the Viva app, clicking Install new... and selecting the Light bulb.
Once a device is installed, it can be deleted by selecting the correct light bulb from the list under Devices, selecting Delete and following the instructions. 
The light bulb has no self-contained factory reset process,  and can only be factory reset using the Delete fuctionality.