Feature:1. 16-selectable flash groups. Wireless triggering of flashes.2. 50 meters above the regulation distance, maximum sync speed of 1 /250 sec. Switch the on-or-off of the modeling light or AF-assist beam, \u0026 buzzer.3. Supports two power display mode ( 5.0-10.0 or 1/1-1/128 ). Receiver Mini compact flash powered, no batteries.4. Large LCD display. Single point hot shoe, works with camera systems such as Canon, Nikon, Pentax, Olympus, etc.5. Compatible flash: Witkey series flash, QT series flash, QS series flash, Gemini GT series, Gemini GS series.6. 16-selectable flash groups. Wireless triggering of flashes. 50 meters above the regulation distance, maximum sync speed of 1 /250 sec.7. Switch the on-or-off of the modeling light or AF-assist beam, \u0026 buzzer. Large LCD display.8. Single point hot shoe, works with camera systems such as Canon, Nikon, Pentax, Olympus, etc.Specification:Features:16-selectable flash groups.Wireless triggering of flashes.50 meters above the regulation distance, maximum sync speed of 1 /250 sec.Switch the on-or-off of the modeling light or AF-assist beam, & buzzer.Supports two power display mode ( 5.0-10.0 or 1/1-1/128 ).Receiver Mini compact flash powered, no batteries.Large LCD display.Single point hot shoe, works with camera systems such as Canon, Nikon, Pentax, Olympus, etc.Compatible flash: Witkey series flash, QT series flash, QS series flash, Gemini GT series, Gemini GS series.Specifications:ModelFT-16Transmitter Power Supply3V (2 * AA Ni-MH or alkaline batteries) (Not included)Receiver Power Supply5V ( power by flashes)Transmit Frequency433MHz wireless remote systemWorkable Distance50m / 164ft (open areas)Control on FlashesFlash power ratioModeling lamp or AF-assist beam on / offBuzzer on / offPower-ratio display modeFlash triggeringMax. Sync. Speed1 / 250 secondsChannel16Transmitter SizeApprox. 13.5 * 5.1 * 3.5cm / 5.3 * 2.0 * 1.4inTransmitter Weight63g / 2.2ozReceiver SizeApprox. 5.6 * 3.0 * 1.7cm / 2.2 * 1.2 * 0.7inReceiver Weight11g / 0.4ozPackage Size20.5 * 13.8 * 5cm / 8.1 * 5.4 * 1.9inPackage Weight140g / 5.0ozPackage List:1 * FT-16 Transmitter1 * FT-16 Receiver1 * User Manual (English & Chinese)Note:This item only includes the trigger set, the camera and speedlite not include.Package List:1 * FT-16 Transmitter1 * FT-16 Receiver1 * User Manual (English & Chinese)Note:This item only includes the trigger set, the camera and speedlite not include.