ABS plastic case material - Can connect up to 3 flashes off-camera - Can select the flashes combination and choose which flash works in TTL mode through the camera side.(Only one flash can work in TTL mode in Multiple flashes connecting statusit could be selected via PF-801 camera side) - Flash control switch for control A/B/C flash - Switch A/B/C on a transmitter to choose the one (flash) you want to set as TTL master - Suitable for Canon 580EZ II/580EX/550EX/430EX II/430EX/420EX/380EX/320EX/270EX II/270EX/220EX - Package includes: - 1 x VM-801 Camera connector adapter - 1 x VS-801 Flash connector adapter - 1 x RJ45 cable (390cm) - 1 x Chinese manual