VIFLY Finder, a FPV buzzer for the case if your FPV racing quadcopter crashes or lost. The built-in battery enables the buzzer to work even after the main battery was ejected. If the battery is disconnected, it can beep automatically as it has built-in battery. In addition, the buzzer can produce voice much louder than normal buzzer that can help you find the lost quad easily. And the buzzer is compatible with any racing quadcopter and flight controllers in the market.
Here is the introducing video for more details.
Learn more: Vifly Finder
Price: 14.99USD/1pc pack ; 39USD/3pcs pack