Bandwidth of the ESP-NOW protocol channels

[alvaro_argente]

Hi,
I´m comparing the ESP-NOW protocol with Zigbee for a project, i have found that Zegbee have 16 channels with a bandwidth of 5Mhz in each channel in the band of 2.4 Ghz.
Does anybody know the bandwith of ESP-NOW protocol channels in the band of 2.4 Ghz?

[MicroController]

On the RF side, ESP-NOW uses standard 802.11 WiFi packets and channels, each channel covering 20-22 MHz.