I used this about a year ago, but haven't had a chance to use it since, so I'm putting it up for sale. It worked without any problems at that time, but I haven't confirmed its operation for this listing. Please understand that this is a used item before purchasing. The YS-120 Duo, with its dual strobe function, supports high-quality photography with TTL compatibility. - Model Name: YS-120 Duo - Type: TTL Strobe - Features: Dual Strobe Function - Color: Gray - Connection Method: Clamp Type - Other: Adjustable Arm Thank you for looking.