The compact Meike MK320S TTL Speedlite Flash is lightweight, supports front-curtain sync, and is useful for both on- and off-camera operation. Use it as an optical slave or a radio TTL master/slave unit. It tilts from -7 to 90°. Multiple functions and features are built into the unit, including HSS, stroboscopic flash, and more. It features a rear LCD and works quickly with a recycle time of five seconds. It runs on two AA batteries and is compatible with the many Sony mirrorless cameras, including: A7, A7R, A7S, A7II, A77II, A6000, NEX-6, A58, A99, RX1, RX1R, RX10, RX100II, RX100III, A6500, NEX5, NEX7, A5000, A6300, and A9.