About the product 1. High performance, high compatibility, high-power flash output 2. Compatible with both Canon & Nikon 3. 2.9 seconds recycle time with full output, 4-5 seconds without using new battery 4. Remote sensing CELL2 mode for off-camera TTL flash sync 5. From 1/128 to 1/1, 8 stalls to lose, each stall have two fine-tuning compensation 6. High-speed sync up to 1/8000th of a second 7. TTL auto-metering, the flash automatically adjust light output 8. Rear-curtain sync and stroboscopic/multi flash control 9. Peripheral interface: Hot shoe, PC mount, external charge mount 10. Additional function: PC synchronous, sniff mode, over temperature protection and power-saving mode Compatible with ??Canon EOS 5D Mark III , 5D Mark II, 1Ds Mark 6D, 5D, 7D, 60D, 50D, 40D, 30D, 300D, 100D, 350D, 400D, 450D, 500D, 550D, 600D, 650D, 700D, 1000D, 1100D/EOS Digital Rebel, SL1, XT, Xti, Xsi, T1i, T2i, T3i, T4i, T5i, XS, T3; Nikon D4S D4 D3S D800 D700 D80 D90 D7000 D7100 D50 D40X D60 D5000 D5100 D5200 D5300 D40 D3000 D3100 D3200 D3300 Package include 1 * TR-988 Speedlite 1 * Soft Case 1 * Mini Stand 1 * User Manual