NEEWER 250W Studio Flash/Strobe Modeling Light - Great for Amateurs OR Professional Studio Photographers Color Temperature:5400200K. Input Voltage:110-130V. Flash Power Control:stepless. Modeling Lamp:75WS( adjustable). Recharging Time:0.5-2s. Flash Triggering Method:Sync cord, Slave, Test button,Flash trigger. Triggering Voltage:5V DC. Flash Duration:1/2000-1/800s.