Works with X Wireless Radio System Compatible with Canon E-TTL / E-TTL II Frequency: 2.4 GHz Range: 328' 32 Channels; 16 Groups; Wireless ID Remote Power Control for Select Flashes Backlit LCD Panel High-Speed, 1st & 2nd Curtain Sync 2.5mm Sync Port; USB Type-C Port Runs on Two AA Batteries
