Color - Black Body Material -Maple Number of Strings -6 Designed for the Profoto B10 AirTTL Off-Camera Flash Clicks on or off the Profoto B10 in seconds Lithium-Ion battery technology Provides over 400 full power flashes with the Profoto B10 Charge level indicator on battery Charges in less than 90 minutes with Battery Charger 3A Can be recharged from any charge level Can be charged while in use