Godox at 3.5 Series Studio Flash Trigger

Wireless Flash Trigger Supports up to 16 channels Transmitter Power Input: 23A 12V battery (included) Receiver Power Input: 2 AAA batteries (not included) Long battery life of trigger: one year or over 20,000 continuous triggers Plug size of receiver: 3.5mm Adapter size for receiver plug: 3.5mm - 6.35mm Radio working frequency: 433MHz