All guitars come with a built-in EP-01 Schatten Utility Piezo pickup (or similar) included in the price. This is a basic but very serviceable pickup with a reasonable sound that doesn’t need a pre-amp or any onboard batteries.
The main drawback with this type of pickup is that it has no built-in volume or tone controls, so these have to be adjusted by turning around to the amplifier. You can get around this by adding in a belt-mounted pre-amp, or by using volume and tone pedals.
If you would like something more sophisticated in a pickup you can certainly specify it, but will have to pay the extra cost.