This is a tiny 210mm true X FPV-Freestyle frame.

Recommended hardware (What I use):

Motor: 2207 2400KV (Emax eco 2207 2400KV)
FC/ESC: Any F4-F7 stack with ESC (Mamba f405 mk2)
RX: Any (RXSR / TBS Crossfire nano with immortal T antenna)
VTX: Any VTX that has smart audio (MatekVTX / TBS)
VTX Antenna: Any RHCP antenna MMCX/UFL (TBS triumph / TBS triumph PRO / Foxeer lollipop)
FPV Camera: Any, I prefer CCD over CMOS (Foxeer arrow micro pro 2.1mm / Runcam micro swift 3 2.1mm)
Battery: 1500mah 4s (Acehe 4s 1500mah 75c)
HD Cam: Any 1080/60 HD cam (Session 5)
Buzzer: any 9mmx5mm buzzer (https://www.banggood.com/5V-Buzzer-Alarm-Beeper-With-Cable-for-Eachine-QX70-QX90-QX95-NAZE32-F3-DIY-Micro-Brushed-FPV-Racer-p-1100338.html)
Frame: Use this one ;)