Introduction: Smart Studio Strobe is equipped with buzz function and under its anti-preflash model, it can control the cameras equipped with one fire anti-preflash system to fire synchronously on the second flash. The modeling lamp from full power to 1/8 can work the same as those of large studio flashes. Best for portrait and object shooting. Also ideal in professional studio for light source as high light, background light and hair style light etc. Features: Aluminum housing, durable Compact size, powerful Beep comes charging Was equipped with an anti-pre-flash LED display precise power stalls Multi-layer self-protection. Specifications: Flash Output: 250WS Guide Number(m ISO 100): 48 Color Temperature: 5600ÁË200K Operating Voltage: AC220V / 50HZ Flash Power Control: 8 steps Modeling Lamp:75W Recharging Time: 0.5-2s Flash Triggering Method: Sync Cord, Slave, Test Button,Flash Trigger Flash Duration: 1/2000-1/800s Fuse: 5A Dimension: 230*200*108MM Weight: Approx 1.16kg *Confirmed by Godox all new stocks from now will not follow the sync cord (no need sync cord to use with this product) Package Included: 1 x Godox 250SDI(220V) Studio Strobe 1 x Modeling Lamp 1 x Power Cord 1 x Manual (With Original Package)