Features: 1. 16-channel design, strong anti-interference capability. 2. Strong compatibility, transmitter adopts single contact design, suitable for Canon, for Sony, for Nikon, for Pentax camera etc. 3. High-performance with working frequency 433MHz, the highest synchronous speed can reach 1/250s, maximum working distance is 30 meters, suitable for 360-degree professional shooting in different environments. 4. Equipped with an adapter, which allows free conversion between 3.5mm and 6.35mm, and convenient for more studio flash lights. 5. The receiver is used with two AAA batteries (not included). Low power consumption and long life time. Specifications: Brand: VBESTLIFE Material: Plastic Color: Black Transmitter Battery: 23A-12V Battery (Included) Receiver Battery: 2 * AAA (Not included) Channel: 16 Max. Working Distance: 30m Working Frequency: 433Mhz Synchronization Speed: 1/250s Transfer Plug: 3.5mm to 6.35mm Adapter Application: Studio Flash Light Packing List: 1 * Transmitter 1 * Receiver 1 * Adapter (3.5mm to 6.35mm adapter) 1 * Connection Cable (Connect Camera with Transmitter)