This is a G9 halogen bulb:
Note G9 is the name of the socket and form factor, but it says nothing about wattage. Voltage should be mains.
Yours is a G9 COB LED:
Since the original bulb uses LEDs, the fixture may not be designed to handle the heat of halogen, so it's better to replace it with a G9 LED bulb. As for wattage, check the fixture, but really you should be able to use a bit more watts like 5W instead of 2W if you want more light, it shouldn't melt... If you put a 20W halogen lamp in a 2W all-plastic LED-only fixture it will probably melt.
Get a flicker-free bulb if you can, they're easier on the eyes. If you use a dimmer, make sure it says "dimmable". Note the LED bulbs don't all have the standard length, so you might want to measure the space inside the fixture to make sure it fits. For example this one is bigger, so you'd have to check.