Flashpoint R2 Mark II TTL Transmitter for Pentax Cameras (X2T-P) – Flashpoint – Photography Lighting
Pentax Image Transmitter 2 Review - Features and Performance | PentaxForums.com Reviews (Mobile)
Flashpoint R2 Mark II TTL Transmitter for Pentax Cameras (X2T-P) – Flashpoint – Photography Lighting
Amazon.com : Godox CT-16 Wireless Radio Flash Trigger Receiver Kit,Fit Compatible for Canon Nikon Pentax DSLR Camera Studio 3-in-1 Flash Transmitter and Receiver : Electronics