The Meike MK GT620 TTL Transceiver is a professional wireless flash trigger system for photographers who require reliable remote control of flash units. This device supports TTL metering (Through-The-Lens) for automatic flash exposure calculation, manual flash power adjustment, and high-speed synchronization up to 1/8000 second shutter speed. It operates in the 2.4 GHz frequency band with 32 communication channels and provides stable wireless transmission over distances of up to 100 meters in open environments. The transceiver features a hot shoe connection compatible with most major camera brands and a standard 3.5mm sync port for wired connections. The robust ABS plastic housing measures approximately 75 mm in width, 60 mm in height, and 35 mm in depth, weighing 85 grams without batteries. It operates on two AA batteries (not included) and has LED status indicators for battery level and connection status. The MK GT620 functions as both a transmitter and receiver, allowing flexible configurations for multiple flash units. It is the successor to earlier Meike wireless triggers, offering backward compatibility with selected predecessor versions while improving signal stability and reducing susceptibility to interference. Ideal for studio photography, outdoor shoots, and event coverage where consistent flash performance is crucial.