TR-Q8 supports TTL/HSS/front and rear curtain synchronization and other functions TR-Q8 uses advanced high-definition OLED full-color touch screen to intuitively and easily set parameters Built in litihum battery ,Charging time is about 2 hours,Continuous operation Greater than 7 hours Continuous remote control trigger flash Greater than 30000times Master/slave receiver and transceiver in one,CM conversion function,you can quickly switch between TTL automatic flash mode and manual flash mode to cope with different shooting scenes Display:1.43-inch OLED touchscreen shooting mode:TTL/auto/manual synchronous mode:Front curtain/rear curtain/high-speed synchronization wireless frequency:2.4GHz Flash distance:0~80M channel:CH:01-31 Group:GR:A/B/C/D/E/F/G/H/I/J/L/O/P/Q/S/U Battery specifications:DC 3.7V 900mAh 3.33Wh lithium battery Battery life: Greater than 30,000 times continuous working time: Greater than 7 hours Charging time:about 2 hours Charge/upgrade:Type-C interface Color: As Shown Material: ABS Package Contents: 1 * TTL HSS Wireless Flash Trigger