Built-in with 2.4g wireless X system, the V860III-S ensures a reliable process with seamless connectivity when using it off-camera, the V860III-S is also compatible with X system triggers like for , for X1, for X2, etc Flexible Adjustment Angle With the swivel angle from 0° to 330° horizontally, and from -7° to 120° vertically, V860III Lets you easily complete direct flash, bounce flash, and any other techniques Model: V860III Modeling flash: Fired with camera's depth-of-field preview button Power(1/1 out power): 76Ws Color Temperature: 5300K±200K Flash Coverage: 20 to 200mm Flash Duration: 1/300 to 1/20000 seconds Power Source: 7.2V/2600mAh Li-ion battery Recycle Time: 1.5 seconds. Green LED indicator light up when the flash is ready. Full Power Flashes: . 480 Sync Triggering Mode: Hotshoe, 2.5mm sync line Multi Flash: Provided (up to 100 times, 100Hz) Wireless flash function: Transmitter, Receiver, Off Transmitter groups: M,A,B,C Controllable Receiver Groups: A, B, C, D, E (D,E group can be controlled by X series flash trigger) Transmission range (): 100m Channels: 32 (1-32) ID: 01-99 2.4G Wireless X system Applicable to:for Color: As Shown Material: ABS Package Contents: 1 x Speedlite Only the above package content, other products are not included. 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.