RM-VPR1 Remote Shutter Release for Sony A7 III A7 II A7 A7R III A7R II A7R A7S

Sony Alpha, A99, A99 II, A77 II, A7, A7 II, A7R, A7S, A7S II, A7R II, A6000, RX100 II, RX100 III, Sony NEX-3N, A3000, A5100, PF175, HX300, A58, A68. And, a shutter release button lock is available which for long exposures shooting and continuous shooting helpfully.

eBay