Features: RF-602/RF-603 two communication modes RF605 = RF602 +RF603 TX/RX/TRX multiple working ways A/B/C/D/E/F 6 groups (compatible with YN560-TX) Wireless shutter remote control Clear LCD screen display, shortcut key operation 16 channels Communication range up to 100m Compatible with RF603II, RF603 and RF602 Specifications: Type: FSK 2.4GHz wireless remote control system Transmission distance: 100m Channels:16 channels Group:6 Groups Shutter release: half-press, full-press Shutter interface: 2.5mm socket Studio flash light interface: standard PC socket Max Sync Speed: 1/320 second Battery: AAA??2(3V ) Size: 85mm x 41mm x 35mm Compatible with C1 and C3 Canon Camera: Canon 1Dx, 1Ds series, 1D series, 5D series, 6D, 7D, 50D, 40D, 30D, 20D, 10D Canon 70D, 60D, 700D/T5i, 650D/T4i, 600D/T3i, 550D/ T2i, 500D/ T1i, 450D/Xsi, 400D/Xti, 350D, 300D, 1200D, 1100D, 1000D Package included: 2 x Transceivers 1 x Shutter release cable C1 1 x Shutter release cable C3 1 x User manual in Chinese and English