Feature: 1. Powerful functions, support TTL flash, manual flash, strobe flash, 1/8000s high-speed synchronization, front curtain synchronization, rear curtain synchronization. 2. 2.4GHz frequency, effective trigger distance 25m, can be used as the master slave lamp, support A/B/C three groups, 4 channels. 3. The flash is equipped with an autofocus auxiliary light that increases the likelihood of successful focusing in low light or low contrast conditions. When focusing is difficult, the red focus lamp lights up automatically to help the auto focus. 4. Flash coverage can be set to auto zoom and manual zoom. Flash coverage ranges from 24 to 105 mm. With a built-in wide angle diffuser, it is possible to use a wide angle lens up to 14mm for flash shooting. 5. The output power range of the flash is 1/1 to 1/128, and the color temperature is 5600K±200K. It is widely used in portrait photography, wedding photography, activity photography, travel photography, still life photography and so on. Specification: Condition: 100% brand new 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. Package List: 1 x Camera Flash (Battery Not Included)1 x Base1 x Storage Bag1 x Manual