Color Black Brand YongNuo Model RF-603II-C1 Material Plastic Quantity 1 Set Compatible Brand Canon Compatible Models Canon 60D / 350D / 450D / 500D / 550D / 600D/650D/700D Pentax Effective Distance 100 m Wired/Wireless Wired Cable Length 80 cm Receiver 2 Piece Channel 16 Sync Time 1/320 s Working Frequency 2.4GHz Working Voltage 3 V Battery Model AAA Battery included or not No Remote Controller Battery Number 2 Packing List 1 x Transmitter (2 x AAA batteries not included) 1 x Receiver (2 x AAA batteries not included) 1 x Shutter release cable (2.5mm plug / 80cm) 1 x Chinese / English user manual