Features:

- Built-in 2.4G ultra-long-range wireless flash system, Global free application for digital FSK 2.4GHz & ultra-long-range-distance wireless transmission module, communication distance can up to 50 metres.

- The speedlite could be the Master unit (accept the flash from the main control unit and to achieve the desired flash), supports 10 channels, three different groups to achieve multi-lamp creative cloth light system.

- TR series: High performance, high compatibility, high-power flash output.

- Increases the external power outlet: TR series adds an external power outlet; call back the higher rate to meet your needs.

- Quick call back: Full output only 2.9 seconds recycle time, do not apply the new battery can also call back to obtain a rapid rate, only 4-5 seconds.

- Supports high-speed continuous shooting: 1/16 and below the brightness, TR series to support high-speed continuous shooting 12SEPS.

- Power-saving mode: When the flash without any action on the backlight turned off after 20 seconds, 60 seconds when the flash does not work, CPU automatically goes to sleep does not work more than 30 minutes, CPU will automatically shut down.

High-precision output: From 1/128 to 1/1, 8 stalls to lose, each stall have two fine-tuning compensation.

- Overheat protection: Built-temperature detection (thermal protection)

Flash mode:

Without Automatic AF(assist lamp); Manual mode; Repeating flash mode; Semi-automatic flash mode.

Specifications:

- Guide number:56 meters (ISO 100, 180mm).

- Circuit design:Insulated Gate Bipolar Transistor (IGBT).

- Flash mode:Master, Slave, S1, S2, , Multi.

- Zoom range: 18~180mm, Manual Zoom, Swinging/Tilting flash head(bounce flash).

- Vertical rotation angle:0 to 90 degree.

- Horizontal rotation angle:0 to 360 degree.

- Power: 4 x AA Batteries(Alkaline or Ni-MH are usable).

- Flash control:1/128~1/1 step length is 0.3EV, Total 22 fine-tuning stalls.

- Recycle time: approximately 3s (AA alkaline cell used).

- Lighting time:100-1500 times (using AA alkaline cell).

- Flash time:1/200s~1/20000s.

- Wireless triggering distance:20-30m indoor, 10-15m outdoor.

- Additional function: PC synchronous, sniff mode, over temperature protection.

- Dimensions: 200 x 75 x 57mm(extended state).

- Net Weight: 400g.

- Compatible for Sony DSLR camerasa77, a55, a65, a57, a33, a900, a700, a500, a350, a300, a200, a100, a850, a580, a560, a550, a500, a450, a390, a380, a330, a290, a230, etc.