Wireless remote control off-camera flash on-board flash, as long as the digital camera has a hot shoe, you can off-camera on-board flash from three mainstream<br> Special one-color design, with 16-channel frequency modulation, 30-meter long-distance trigger, strong anti-interference ability<br> Low voltage (5V-12V) trigger, sensitive response, no stroboscopic, leakage and other undesirable phenomena<br> Suitable for professional photographers and photographers who often use top-mounted flash; mainly used for different of on-board flashes to achieve off-camera flash, which is convenient for photographers to fill light<br> Specification:<br> Material: ABS<br> Transmitter battery: 23A-12V battery (built-in), can be used up to 10,000 times<br> Outdoor remote control distance: 30m/98.4ft<br> Indoor remote control distance: 25m/82ft<br> Channel: 16 channels<br> Frequency: 433Mhz<br> Maximum synchronization speed: 1/250S<br> The product appearance and printed words depending on the batch, but this does not affect use<br> Color: As Shown<br> Package Contents:<br> 1 x Radio Wireless Remote<br> 1 x Flash Synchronizer<br> Only the above package content, other products are not included.<br> Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.