Features:

The PROMASTER FBP4500 Flash Power System is a must have accessory for photojournalists, wedding and sports photographers, or any photographer who wants extra fast recycle times and extended battery capacity.

The ability to power multiple flash units from a single pack makes this one of the most flexible products of its type.

Includes: Control unit, 11.1V 4500mAh battery, charger, and shoulder strap

Specifications:

• Large capacity lithium battery gives up to 1800 full power flashes
• Recycle times as fast as second for a full power flash
• Dual output powers two flashes without a reduction in recycling time
• LED battery level and status indicators
• Replaceable battery Use spare batteries for uninterrupted shooting
• Compatible with ProMaster, Canon, Nikon, Sony and other flashes with external power input
• Requires the purchase of a power connection cable for your flash
• Dimensions: 6 1/4 x 5 1/4 x 1 15/16" / 159 x 133.5 x 49mm
• Weight: 19.05 oz. /540g