The newest addition to the Pro-Flash line the TLi-N is the worlds first Lithium-Ion powered speedlight with TTL No more fumbling with a pocket full of AA batteries the TLi-N features an exchangeable Li-Ion battery for easy & inexpensive battery management. With a 1. 5 second full-power recycle time & 650 full-power flashes per charge the TLi-N is always ready for you when you need it most. & with advanced TTL High Speed Sync & Remote Triggering functions the TLi-N gives you the same performance youve come to expect from the leading speedlights on the market The Pro-Flash TLi-N is designed to work flawlessly with the latest Nikon DSLR cameras & flashes featuring TTL functionality that is compatible with Nikons I-TTL system Flash Exposure Compensation & Flash Exposure Lock. The TLi-N can also be used in conjunction with the Nikon SB-900 & SB-910 as an Optical Master or Slave flash making it an easy addition to your existing speedlight set-up. For those already using the Pro-Flash One Eighty or Pro-Flash 360 the TLi-N is designed to work in perfect harmony with the remote triggering system. When used off-camera the TLi-N can be controlled by the same Strobies Pro-Flash Remote that is used to control the other Pro-Flash units Sold Separatelystrong Compatible Camerasstrong Nikon DSLR cameras with I-TTL auto flash capabilities- D800 D700 D7100 D7000 D5200 D5100 D5000 D300 D300S D3200 D3100 D200 D70 Sstrong Compatible Speedlightsstrong For use as wireless Master or Slave flash- SB-900 SB-910