*Clear digital display to show accurately the power level *Stepless power control from full to 16(5 stops point) *Fast recycling time and flash duration *All models equips with cooling fans *Auto dump function *Built-in Slave Specifications of TC Series Professional Studio Flash Model :TC200 TC300 TC400 TC500 TC600 TC800 TC1000 Power: 200WS 300WS 400WS 500WS 600WS 800WS 1000WS GN<ISO100>:45 58 65 70 80 88 92 Power Control: 1/16 1<stepless> Recycle Time: 0.4 2s Modeling Lamp: 100WS 150WS 150WS 150WS 150WS 150WS 150WS Color Temperature: 5600±200K Trigger Mode: Sync cord,light control,test button