Neewer 2.4G HSS 1/8000s TTL GN36 Wireless Master Slave Flash Speedlite for Sony a9 a7III a7RIII a7II a7RII a7SII a7 a7R a7S a6500 a6300 a6000 a77II RX10II/III/IV Cameras with Hard Diffuser (NW400S)

Amazon.com Price: $84.90 (as of 18/10/2019 05:26 PST- Details) & FREE Shipping.

High Guide No.36 (ISO 100), Full TTL Functions, Support HSS(Max.1/8000s), Front & Rear Curtain Sync
Flash Mode: TTL, M, Multi, FEC, Master, Slave, S1, S2
22 steps of power output (1/1-1/128), Approx.0.1-2.2s Recycle Time, 210 Full Power Flashes, 24-105mm auto/manual zooming