Neewer NW880N 2.4G Wireless HSS i-TTL LCD Display Master/Slave Flash Speedlite for Nikon DSLR Cameras Such As D7200 D7100 D7000 D5200 D5100 D5000 D3000 D3100 D810 D610 D300 D300S D200 D90 D70S High Guide No.:60(m ISO 100,@200mm). Super fast Recycle time:approx. 0.1-2.6s. Various Flash mode:i-TTL,Master,Slave, Off, Multi,M,S1/S2 Supports Optic transmission and 2.4G transmission! Built-in 2.4G ultra-long-distance wireless remote system for transmission and for using dedicated TTL remote control X1N, and for FT-16S flash trigger to remotely control and trigger the flash(Note:you need to buy X1N and FT-16S additionally).Communication distance up to 100 meters. Other Functions: First Curtain Sync,Second Curtain Sync,AF Assist Beam,FEB,FEC,FEL,Power Save,Overheat Protection,Low Battery Indicator,Firmware Upgrade,Modeling flash,Custom Function