Question about Netgear Nighthawk X6S mesh extender

The description is a little too vague. One could think that the part is extremely long Here are the exact specifications for the AP mode: Band 1: 400 Mbps at 2.4 GHz Band 2: 866 MBit/s at 5 GHz Band 3: 1733 MBit/s at 5 GHz