Provided herein are apparatus and methods for signaling regulatory information and transmit power information for device-to-device communication. An apparatus for a Wi-Fi device comprising: a RF interface; and processor circuitry coupled with the RF interface. The processor circuitry is to: decode a first discovery frame received from a peer Wi-Fi device via the RF interface to obtain a first Operation Information attribute of the peer Wi-Fi device, wherein the first Operation Information attribute is to indicate a first operation mode of the peer Wi-Fi device; and encode, in response to the first discovery frame, a second discovery frame for transmission to the peer Wi-Fi device via the RF interface, wherein the second discovery frame includes a second Operation Information attribute of the Wi-Fi device to indicate a second operation mode of the Wi-Fi device. Other embodiments may also be disclosed and claimed.