JJC JM-F(II) Radio Frequency Wireless Shutter Remote Control For Sony A77II A99 A57 A35 A37 A100 A200 A300 A350 A450 A500 A550 A560 A580 A700 A850 A900 A33 A55 A65 A77 Camera Replace SONY RM-S1AM/RM-S1LM Frequency: 16 Possible Radio Channels over 433MHz Multi-function: Wireless function supports five modes: single shot, 5 seconds delay shot, 3 continuous shots, unlimited continuous shots and bulb shot. Dual-Function Release: Press the transmitter's button half way to focus; press it fully to trigger the shutter. Delayed Release: The delay function gives you extra time to get into position. Long Exposures: With the JM-II you can control the length of the exposure remotely.