USB: USB Compliant 2.0, Mini-B Connector Antenna: Internal Transmit output power: Less than 0.001 watt (1/1000 of a watt or 1 milliwatt) Mounting: Hot shoe only Power / Channel Switch: OFF - C.2 - C.1 Frequency: 340.00 - 354.00 MHz US FCC / IC 433.42 - 434.42 MHz CE Channels: 52 Channels over 26 Frequencies (FCC/IC) 35 Channels over 5 Frequencies (CE) Range Performance: Up to 800 feet (10 to 240 meters) for CLS / i-TTL triggering depending on flash used, antenna orientation and other variables Up to 1200 feet (10 to 365 meters) for basic triggering depending on flash used, antenna orientation and other variables
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