NeewerLI-ION BATTERY TT860 Speedlite iTTL Camera Flash for Nikon D4 D4S D3X D810 D800 D610 D600 and Other Nikon DSLR Cameras, 650 Full Power POPS with Single Li-ion Battery(1.5s Recycle Time) Inheriting its brother TT850's Li-Accurate TTL exposure for Nikon DSLRs battery power feature, TT860 integrates TTL in the flash for the Nikon version. Accurate TTL exposure for Nikon DSLRs Supp1.GN58 (m ISO 100 @ 105mm) with TTL/M/Multi/S1/S2 modes5s recycle time at max. power & 650 full power popsort FEC, FEB, FE Lock, Rear Curtain Sync, Modeling Flash, Control with Camera's Menu Screen, etc 1.5s recycle time at max. power & 650 full power pops GN58 (m ISO 100 @ 105mm) with TTL/M/Multi/S1/S2 modes