https://didiok.cc/factory/water%20rescue%20drone%20flying%20lifebuoy%20TY-3R_2.html
Water rescue drone TY-3R Flying lifebuoy survival equipment-DIDIOK MAKINGS water rescue drone/fire...
water emergency rescue equipment air-water dual-purpose rescue drone, which organically combines drones and life buoys, which can be understood as a
water rescue drone