Batteries ‏ : ‎ 3 Lithium Ion batteries required. (included)
Product Dimensions ‏ : ‎ 8 x 3.4 x 2.01 cm; 140 Grams

Transmitter:
1) Transmitter Distance:
---up to 30m (strobe&speedlite)
---up to 100M (camera)
2) Function Switch
--- Flash (Studio flash & speedlite Trigger mode)
--- Camera B (Normal shooting & long-exposure setting)
--- Camera G (Delay shooting)
3) Channel Switch: 16 Difference channels
4) Trigger Button:
--- Half press
--- Fully press
5) Transmitter indicator lamp --- LED double color lamp
6) Hot Shoe Flash connection
7) Antenna
8) Battery Holder
9) PC SYNC Port
Time of shooting: Up to 20000 times (using 23AE 12V lithium battery)
Transmit frequency: 433MHz Wireless remote system
Receiver Stand-by time: Up to 45 hours (using AAA battery)
Dimensions : Transmitter: 80.0mm x 30.0mm x 15.0mm (L X W X H)