VISICO Camera Flash Speedlite Wireless Trigger for Nikon D600/D610/D700/ D750/D7000/D7100/ D7500/D800/D810 Condition: Item Type: Camera Flash Material: ABS Color: as picture shown Model: VS-765 Compatible for Nikon D4/D600/D610/D700/ D750/D7000/D7100/ D7500/D800/D810/D90 Flash index: approx. 58 (100 mm coverage, ISO100, in metres) Color temperature: 5600 ± 200K Flash coverage: 24-105mm (14mm when astigmatism plate is used). Autofocus (automatically set flash coverage range according to shooting Angle and image sensor size) Reflection angle: manual focus 90° up, 7° down, 180° left/right Flash duration: 1/10000s Exposure control system: TTL automatic flash, manual flash, strobe Flash exposure compensation (FEC): ±3 stops in 1/3 stop increments  Synchronization mode: high-speed synchronization (up to 1/8000 second), front curtain synchronization, rear curtain synchronization Manual flash: 1/128-1/1 (adjusted in 1/3 level increments) Frequency sparkles: up to 50 times, 100Hz Call back time: approximately 3 seconds Wireless function: main control unit, subordinate unit Controllable subordinate unit group: A/B/C Effective trigger distance: 25m Channel: 1-4 Slave unit status indicator: both red lights are on at the same time Battery: 4 x AA battery (not included) Battery life: full power flash about 200 times Power saving mode: flash when main lamp is used After about 90 seconds of unattended operation, close the setting. When doing the slave unit, it goes into hibernation state for 60 minutes. Size: approx. 61x75x190mm/2.4x3x7.5inch