1. The X2 series TTL wireless flash trigger can be used with camera-mounted flashes, outdoor flashes and studio flashes with built-in X series wireless RF systems. X2 achieves stable, reliable and efficient real-time signal transmission, making it an ideal choice for photographers who meet various lighting needs. 2. Download the Photo APP using your iPhone/Android phone or Android tablet, connect to X2 via Bluetooth, and you can control flash mode, power output, modeling light mode, flash buzzer, etc. 3. Large LCD display with clear display effect, equipped with 5 dedicated group buttons and 3 function buttons for convenient and quick settings. You can easily access 5 groups, 32 channels, 99 RF ID settings to avoid interference from other nearby systems. 4. Fully support TTL auto flash, 1/8000s high-speed sync, multiple flash mode, manual mode, flash exposure compensation, adjust lighting parameters through mobile APP, scan settings, single and continuous shooting settings, modeling light control, adjust the output value of all groups at the same time, etc.