1. For Canon camera E-TL auto flash, Nikon camera TL auto flash
2. Guide number: 60 (105 mm focal length | SO100, in meters)
3. Flash coverage: 18-180mm; manual zoom; automatic zoom (automatically set the flash coverage pattern suitable for the lens focal length and image size) flash head rotation: horizontal 0-270 degrees, up and down -7-90 degrees (bounce flash)
4. Flash duration: 1/200s-1/20000
5. Exposure control system: ETTL auto flash, TTL auto flash, manual flash
6. Manual flash: 8-level light control (1/1.1/2.1/4.1/8.1/16.1/32.1/64.1/128)
7. Synchronization mode: high-speed synchronization (up to 1/8000s), front curtain synchronization, rear curtain synchronization
8. Stroboscopic flash: available (number of times: 40 times; 199Hz)
9. Manual Flash Exposure Bracketing: Adjust in 1/3 gear increments between +/-3 gears (manual flash exposure compensation and flash bracketing can be used in combination)
10. Wireless function: master control unit, slave unit, close
11. Controllable slave unit group: optical 3 groups: A, B, C; 2.4G 3 groups: A, B, C
Channel: Optical 4 channels: 1, 2, 3, 4; 2.4G: 16 channels, 1-16
12. Transmission range: optical: indoor 12-15 meters, outdoor 810 meters; 2.4G: 50 meters
13. Autofocus auxiliary light: effective range (approx.) center: 0.6-10 meters
14. Power supply: 11.1V/2000mAh high-rate lithium battery (LE-26B)
15. Recycle time: 0.1-1.5 seconds (power output 1/128-1/1)
16. Number of flashes: 100-1500 times (flash output 1/1-1/128)
17. Energy saving: 60 seconds to go to sleep without operation, no sleep state when set as a slave unit
18. Synchronous trigger mode: hot shoe, 3.5mm sync line, wireless light control S1, S2, wireless hot shoe receiver, built-in 2.4G
19. Color temperature: 5600k+/-100k
20. Net weight (without battery): 410g
