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Guide number 58, E-TTL, i-TTL, Manual, Multi, HSS, Slave. Optical communication.
Guide nuber: 58 - CLS, E-TTL / i-TTL - MULTI, USB, recharge time: 2s.
Wireless trigger 2.4 Ghz. Can control YN-622, RF-602/603 receiver. M/Multi/TTL modes. HSS mode