Features:
Support Nikon I-TTL:
Automatically determines the appropriate flash output by the actual light amount of the lens of camera; Combined with ≤ 3 fine-tune light output and power zoom function of the SP-690 flash lamp， allowing you to capture your favorite moments easily.
Fast recycling time:
When use of Ni-Mh rechargeable batteries (Ni-MH)， to complete charging for only two seconds (1/1 output level); when use of alkaline batteries， to complete charging for only five seconds.
Large capacity electrical storage system:
Equipped with OLOONG 1400UF 360V high-quality capacitors and import charging and discharging chips， formed into a strong power supply and electricity storage systems.
Sound monitoring system:
When capture the wonderful scene， the sound monitoring system of SP-690 would prompt you the status， just to know "charging complete" “Flash completed” "low battery warning” “xenon lamp overheating protection" by your ears. You can also turn off this feature on a quiet occasion temporarily.
High-definition LCD and LED backlit:
HD LCD displays more clear and complete information to you， the operation and flash status would be more directly. LED backlit help you use at night， which is more convenient and smaller power consumption.
Xenon lamp overheating protection system:
SP-690 flashlight is with overheat protection system for you， enter the overheat protection mode automatically when the temperature sensing system senses that the xenon lamp reaches a certain high temperature; In addition， the SP-690 enters overheating protection mode when the number of continuous firing beyond 25 times at 1/1 level. The double protection has an effect on extending the life of the flashlight.
High-temperature insulation:
SP-690 flashlight， connect the high-temperature insulation glass in front of the xenon lamp， so that the high temperature is isolated， and ensures that its light transmission is not affected， to ensure the flash effect perfect.
Metal mounting foot:
SP-690 flashlight use pure copper metal mounting foot design， effective solute the wear and tear of the mounting foot caused by the demolished， and it is more solid.
Auxiliary focus system:
When light is not enough， SP-690 flash lamp's dual af-assist beam emitter will work immediately.
Light lead flashing system:
Support application of multi-lamp light (F1/F2 lead flash mode).
Advanced application:
You can set Exposure compensation， Exposure bracketing， Front/Rear-curtain sync of external flash， and it supports Red-eye reduction flash mode， FV LOCK， Power saving mode.

Specifications:
Brand: Oloong
Model: SP-690
Type: On-camera， i-TTL autoflash flashlight
Compatibility: For NIKON D3000，D5000，D3100，D5100，D7000，D50，D60，D70，D70S，D80，D90，D200，D300，D300S，D700，D3S
Guide number: 50 (180 focal length， ISO 100)
Lens coverage: 24mm-180mm
Auto zoom ( Flash coverage set automatically to match the lens focal length); Manual zoom
Display type: LCD display & LED Backlit
Flash time: 1/800 - 1/20000s
Color temperature: 5600K
Power supply: 4 * AA batteries(Alkaline & Ni-MH & Lion) (batteries not included)
Recycle time: Approx. 2s(AA Ni-MH cell used); Approx. 5s(AA alkaline cell used)
Lighting times: 100-500 times (4 * AA Alkaline batteries)
Flash control: 22 Level Light quantity output control(1/1 - 1/128， 14 levels of fine tuning ); i-TTL autoflash
Power saving: After 3minutes in stand-by mode
Vertical rotation angle: -7⊂- 90⊂
Horizontal rotation angle: 0⊂- 270⊂
Color: Black
Item dimensions: 196.5 * 77.5 * 58.5mm/ 7.74 * 3.05 * 2.30in
Item weight: 407g/ 14.35oz
Package dimensions: 22.5 * 12.5 * 9.5cm/ 8.86 * 4.92 * 3.74in
Package weight: Approx. 746g/ 1.64Lb

Package Including:
1 * SP-690 Speedlite for Nikon
1 * Mini Stand
1 * Soft Case
1 * Flash Diffuser
1 * User Manual