Specifications: Power(1/1output): 76Ws Flash Coverage: 28 to 105mm Flash Mode: Auto zoom/ Manual zoom Rotatable Angle: Swinging/tilting flash head(bounce flash): 0 to 330 horizontally and -7°to120°vertically Flash Duration: 1/300 to 1/20000 seconds Flash Exposure: Manual, FEB:+3 steps with 1/3 increment each step(Manual FEC and FEB can be combined) Flash Exposure Lock: With button or button (FEL) Sync Mode: High-speed sync(up to 1/8000 seconds), first-curtain sync, and second-curtain sync Multi Flash: Provided (up to 100 times,199Hz) Wireless Flash: Radio 2.4G Transmission Wireless Function: Transmitter, Receiver, Off Transmitter Unit Groups: M,A,B,C Controllable Receiver: A, B, C, D, E(E group can be controlled by X series flash trigger) Transmission Range: 100m(approx.) Channels: 32(01-32) ID: OFF/01-99 Modeling Flash: Fired with camera's depth-of-field preview button Auto Focus Assist Beam Effective Range: Center:0.6~10m/2.0~32.8 feet(approx.)/ Periphery: 0.6~5m/2.0~16.4 feet LED Lamp Power: 2w Color Temperature: 3300K±200K Built-in Lithium Battery: 7.2V/2980mAh Recycle Time: Approx.1.5 seconds Number of Flashes at: Approx.500 1/1 step Packing List: 1 * Flash Light 1 * Storage Bag 1 * Detachable Sub Flash 1 * Mini Stand 1 * Battery 1 * Charger 1 * Type-c Cable 1 * Manual