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| Guide No | 58(180mm zoom, ISO 100M ) |
| Flash range | 18-180mm;Manual zoom/Auto zoom |
| Flash duration | 1/200s-1/20000s |
| Exposure control system | E-TTL ,Manual ,i-TTL ,Manual |
| Manual flash | 8 grade power control (1/1,1/2,1/4,1/8,1/16,1/32,1/64,1/128) |
| Flash exposure Compention (FEC) | Manual flash exposure bracketing : as 1/3 step to adjusting between ±3 step |
| Multi flash | (number of flash : 40 times ,199HZ) |
| Wireless function | 2.4G : 50mm ,Master unit,slave unit,off |
| Slave unit group /Channel | 3 groups :A,B,C /Optica 4 groups :1,2,3,4/2.4G : 16 channels |
| Power source | 4 pcs AA NI-MH battery or alkaline battery |
| Recycle time | 0.1-3 seconds (output 1/128-1/1) |
| number of flash | 100-1500 times (output 1/1-1/128 ,use 2800mah battery) |
| Other function | Save power,Sync trigger,High speed sync (1/8000s),front curtain ,second curtain |
| Volume/Weight | 60*205*75mm / 410G |