Maximum Watt/Seconds200CompatibilityTTL with Canon, Nikon, Sony cameras with optional X1-C, X1-N, and X1-S transmitters
TTL with Olympus, Fujifilm cameras with optional X1T-O and X1T-F transmittersControlManually on unit
Via X1 Transmitter which will Wirelessly Control:
Flash Mode: TTL, Manual, Multi (Stroboscopic), Power Level
Modeling Lamp On/Off, Beeper on/off
First and second curtain sync, High Speed SyncGuide NumberAt Full Power:
Speedlight Flash Head: 170.6' / 52 m ISO 100 @ 35 mm
Bare Bulb Flash Head: 197' / 60 m ISO 100 with AD-S2 reflector @ 28 mmColor Temperature5600K (±200K)Recycle Time0.01 to 2.1 SecondsFlash DurationSpeedlight Flash Head at T0.1: 1/220 to 1/15,380 Second
Bare Bulb Flash Head at T0.1: 1/220 to 1/13,510 SecondFlash Variability9 Steps: 1/256 to 1/1Flash DelayYes, 0.01 to 30 SecondFlash ModesWireless Off: Manual/Multi
Wireless Radio On: TTL/M/Multi Stroboscopic: up to 90 times (99 Hz)Modeling LightUses Speedlight Head: Auto turn off after 30 minutesSync ModeHigh-Speed Sync up to 1/8000 Second
First Curtain Sync and Second Curtain SyncFlash Exposure Compensation±3 Stops in 1/3 Stop IncrementsFlash Ready IndicatorLED, Beep
Flash Hibernates Automatically After 30 Minutes of Non-useBuilt-in Slave CellS1 and S2 Optical Slave Modes
2.4 GHz Radio SystemWireless & Radio SpecificationsFunction: Slave or Off
Channels: 32
Groups: 5 (A, B, C, D, E)
Range: 328' / 100 mMounting1/4"-20 Female ThreadsFan CooledNoReplaceable FlashtubeYes, in Bare Bulb HeadConnectors3.5 mm Sync Input
Wireless Control Port
USB PortBatteryLithium, 14.4 V / 2900 mAh
Power remaining indicatorNumber of Flashes @ Full Power500Dimensions6.7 x 3.0 x 2.0" / 172 x 75 x 54 mm Without Flash HeadWeight20.8 oz / 590 g Without Flash Head and Battery