COMET wireless sync device, RS-Receiver RS-R (^^) Brand new, unused. It's unopened, with the tape on the box still intact, but there's a slight stain on the tape as shown in the fourth picture. Immediate purchase is OK ♪ RS-Transmitter RS-T is also listed at the same time. Bulk purchases are also welcome (^^) ◾️Features◾️ A radio wave sync device using 2.4GHz radio waves. Not only for strobe synchronization, but also usable as a wireless release. Operating distance: Usually within 80m. 16 channels. Supports shutter speeds up to 1/200 second. Synchronizes up to 8 frames per second. Lighting without worrying about cords because it uses radio waves. Set the transmitter on the camera's hot shoe or connect it with the included sync cord. Then, connect the receiver to the strobe with the included cord. After that, you can do your lighting work without being bothered by the troublesome cord management. Because it's a radio wave type, it can be used during the day, which was not possible with the conventional infrared type. You can also quickly set up for outdoor shooting.