Two transmission ways, optic transmission and 2.4G wireless transmission, better to meet your needs.
1 x Carrying Bag
Dimension: Item Weight: 412g / 14.6oz Item Size: 19 * 7.5 * 5.0cm / 7.5 * 3.0 * 2.0in Package Weight: 556g / 19.6oz Package Size: 20 * 9 * 8cm / 7.9 * 3.5 * 3.1in
1 x User\'s Manual(Chinese /English)
Wireless Flash(optic and 2.4G) Wireless Flash Function: Master, Slave, Off Controllable Slave Groups: 3(A/B/C) Transmission distance(approx.): Optic---- Indoors:12 to 15m Outdoors:8 to 10m 2.4G: 100m Channels: Optic 4(1,2,3 and 4)/2.4G: 32(1-32) Slave-ready indicator: Two red indicators blink
1 x Speedlite