Product Review

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:
Brand: Godox
Model: FT-16, FTR-16
Transmitter Power Supply: 3V (2 * AA Ni-MH or alkaline batteries) (Not included)
Receiver Power Supply: 5V (power by flashes)
Transmit Frequency: 433MHz wireless remote system
Workable Distance: 50m / 164ft (open areas)
Control on Flashes: Flash power ratio; Modeling lamp or AF-assist beam on/off; Buzzer on/off; Power-ratio display mode; Flash triggering
Max. Sync Speed: 1/250 seconds
Channel: 16
Transmitter Size: Approx. 13.5 * 5.1 * 3.5cm / 5.3 * 2.0 * 1.4in
Transmitter Weight: 63g / 2.2oz
Receiver Size: Approx. 5.6 * 3.0 * 1.7cm / 2.2 * 1.2 * 0.7in
Receiver Weight: 11g / 0.4oz
Package Size: 20.5 * 13.8 * 4.6cm / 8.1 * 5.4 * 1.8in
Package Weight: 184g / 6.5oz

Package List:
1 * Transmitter
3 * Receiver
1 * Andoer camera strap
1 * User Manual (English & Chinese)

Note:
This item only includeds the trigger set and assorted receivers, the camera and speedlite not include.