VIFLY Beacon Wireless Self-Powered Drone Buzzer for Sale RaceDayQuads
List of lost quad buzzers – finders w/battery
Shoot Out: Self Powered Buzzers for FPV Drones (Built-in Battery) - Oscar Liang
Buzzer for Quadcopters - Oscar Liang
23X17X17mm JHEMCU JHE42B Finder 5V 110DB LED Drone Buzzer Built In Battery for RC Airplane FPV Racing Long Range Drone DIY Parts|Parts & Accessories| - AliExpress
JHEMCU JB20A Drone Finder and Buzzer
Vifly Finder 2, buzzer stand-alone.
Super Loud 5v Drone Buzzer/Beeper - MyFPV
HGLRC Soter FPV Drone Buzzer
RC Buzzer Alarm Drone Finder Buzzer For FPV Racing Drone/BF/CF Controller | eBay
JHE42B 5V 110dB Finder BB Buzzer Tracker with BF / CF Flight Control FPV Drone - Walmart.com - Walmart.com
VIFLY Finder 2 Super Loud 5V Buzzer Tracker Over 100dB Built in Battery LED Self Power for FPV Racing Micro Long Range LR4 Drone|Parts & Accessories| - AliExpress
Amazon.com: VIFLY Finder V2 FPV Racing Drone Buzzer with Battery Lost Drone Alarm 110dB Tracker Working as Normal Buzzer or Standalone Beeper (1pc Pack) : Toys & Games