off(M/Multi); slaver unit of radio transmission(TTL/M/Multi) Compatible Cameras under Radio Transmission(as slave unit): Compatible with Canon EOS cameras(X1T-C as master unit); Nikon cameras(X1T-N as master unit); Sony cameras(X1T-S as master unit); FUJIFILM cameras(X1F as master unit); Olympus cameras(X1T-O as master unit) Flash Duration Time t0.1(approx.): 1/220s~1/10200s Power: 300Ws Color Temperature: 5600K±200K Stable Color Temperature Mode: Assure ±100K over the entire power range Power Output: 9 steps: 1/256~1/1 Multi Flash: Yes(Times:90; Hz: 99) Flash Exposure Compensation(FEC): Yes(Adjust via the 2.4G remote control) Sync Mode: HSS(up to 1/8000s), first-curtain sync, second-curtain sync Delay Flash: 0.01~30s Modeling Light(LED): 12Ws, color temperature: 3000K~6000K±500K; brightness: 1~10 steps Optic Slave Flash: S1/S2 --Wireless Flash Transmission: 2.4G wireless X system Controllable Slave Groups: 5 groups(A, B, C, D, E) Transmission Range(approx.): 100m Channels: 1~32 ID: 01~99 --Power Power Supply: Rechargeable lithium battery, 14.4V/2600mAh Flash Times in Full Power: 320 Recycling Time: 0.01~1.5s Energy-saving: Power off automatically after 30mins(adjustable) of idle operation Sync Triggering Mode: 3.5mm sync cord Power Plug: UK plug Net Weight: 1250g / 44.09oz(Battery included) Item Size: 19 * 10 * 9cm / 7.48 * 3.94 * 3.54in Package Weight: 2520g / 88.89oz Package Size: 24.9 * 22.2 * 10.5cm / 9.80 * 8.74 * 4.13in Packing List: 1 * Godox AD300Pro 1 * Reflector 1 * Flash Tube 1 * Glass Lamp Cover 1 * AD-E2 Bracket 1 * Charger 1 * Power Cord 1 * Battery 1 * Carrying Case 1 * User Manual