The HVL-F60RM clip-on flash unit features high GN602 power, high-speed continuous shooting support, and fast operation that are ideal for advanced to professional users. Wireless radio commander/receiver functionality is included. Quick Shift Bounce is Sony’s original flash head rotating mechanism with the main unit tiltable from horizontal to vertical and it allows fast flash position changes. (90° left and right, 150° up/8° down) In addition to optical remote triggering, wireless radio triggering is supported. Wireless radio communication works reliably at distances of up to 30 meters and even around obstacles or in bright conditions. A total of 15 flash units can be assigned to up to 5 groups. Conventional optical triggering and wireless radio triggering cover a wide range of situations. A HVL-F60RM mounted on a compatible camera can be paired with off-camera units to provide reliable communication over long distances in conditions that would make optical communication difficult. Slow sync, rear-curtain sync, and multi flash are supported. Up to 15 flash units can be assigned to up to 5 groups for wireless flash control at distances of up to 30 meters. Optional Wireless Radio Commander (FA-WRC1M) and Wireless Radio Receiver (FA-WRR1) units allow the HVL-F60RM to be used with Sony flash units that do not have built-in radio wireless capability, as well as the radio-capable HVL-F45RM.