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PocketWizard Plus X Radio Trigger with 10 Channels (2 Pack) Carrying Bag for 2 Triggers

Auto-Sensing Transceiver -Easy to use No settings to make
10 Channels -1-4 Classic plus 5-10 low-traffic channels
Backlit Channel Dial -Easy to set channels in the dark
Internal Antenna -Compact more rugged design
Auto-Relay Mode -Trigger remote camera and flashes simultaneously