Canon DSLR New functions Quick Access Group Buttons Fast Group Management Built-in Bluetooth for Smartphone APP Control Pro 1 / 10th of a Stop Manual Precision Option of Fraction of Full or Whole Number Power Range Readout Mac and PC Firmware Updatable Larger Main Control Dial Global and Individual Modeling Light Power Control Audio Function Control Via Individual Groups High Sync Delay Setting Menu Option Updated Display and Functions ALL Button - Adjusts Manual Groups, Only Slide clamp hotshoe lock Clear Channel Scan for purest signal strength Compatible with Following Cell Phones HUAWEI P9, HUAWEI P10, HUAWEI P10 Plus, HUAWEI Mate 9 Pro, HUAWEI Mate 9, HUAWEI Mate 10 Pro, HUAWEI Mate 10, HUAWEI P20, HUAWEI P20 Pro iPhone 6S, iPhone 6S Plus, iPhone 7 Plus, iPhone 7, iPhone 8 Plus iPhone 8, iPhone 6 Plus, iPhone 6, iPhone X; Samsung galaxy S8, Samsung galaxy Note8, Samsung galaxy S9 Specifications Flash Exposure Control Flash manual: Yes Stroboscopic flash: Yes Transmission range (approx.): Up to 328ft / 100m Built-in wireless: Godox X 2.4GHz Modulation mode: MSK Channels: 32 Wireless ID: 01-99 Groups: 5 TTL and Manual