Features:
Versatile Lighting Controls: A dual-flash-tube design with a separate brightness control system, it allows you to either fire both tubes simultaneously, or each at a time, adjusted from full power to 1/128 at 1/3 stop increments to create light to dark ratio, achieving uniform lighting of your subject when taking high sensitive photos
Universal Compatibility: Including several adapter rings, the macro ring light has a high compatibility with lens of diameters: 49mm/52mm/55mm/58mm/62mm/67mm/72mm/77mm. In addition, the controller unit with a hot shoe is compatible with most DSLR cameras on the market.
Stable and Reliable Performance: Having a powerful rechargeable lithium battery, the macro ring flash light is capable of delivering 660 flash times in full power, battery charger is inclu

Specifications:
Guide No.: GN14/46(ISO100, in meter/feet)
Battery Capacity: 7.2V 2600mAh
Flash Power(1/1 power output): 76Ws
Focus Assist Beam Power: 0.7W * 2
Color Temperature: 5000K
Flash Power Range: 1/1-1/128(with 1/3 increment at each stop)
Flash Duration: 1/300s-1/20000s
Inner Diameter of Light Body: 77mm
Illuminating Distance: 3cm-1.5cm
Recycle Time: 0.1-1.5s
Full Power Flashes: 660 times
Working Environment Temperature: -10℃ to 50℃
Ring Flash Size: 13 * 2.7cm/ 5.1 * 1inch
Controller Size: 12 * 7 * 5cm/ 4.7 * 2.7 * 1.9inch
Net Weight: 577g/ 20.3oz (with battery)

Packing List:
1 * Macro Flash
8 * Adapter Rings
1 * Lithium Battery
1 * USB Charger
1 * USB Charging Cable