Specifications:
Power of the signal transmitter: 23A 12V mini battery(included)
Power of the receiver(AC): 2 * 1.5V AAA Battery(not included)
Outdoor working distance: max. 30m / 90feet (open area, no fraise)
Indoor operating distance: max. 25m / 75feet
Channel: 16 channels
Frequency: 433Mhz
Synchronous speed: Max. 1/250sec
Color: black
Material: Metal + plastic
Package size: approx. 11.5 * 9 * 4cm / 4.5 * 3.5 * 1.6in
Package weight: 111g / 3.91oz

Package Lists:
1 * 16-channel Transmitter
2 * 16-channel Receivers
1 * PC Sync Cord(2.5mm to PC)
1 * User Manual(English)

Note:
This item only includes the trigger set and sync cord.