Each electric water gun is tested for electric water intake and output before leaving the factory to ensure quality.
Residual purified water inside the water tank from production testing is normal and does not affect product use.
The water tank containing purified water is not a quality issue nor a sign of resale.
Additional details
Model 327
Smooth pull-out action, 320 ml capacity, ultra-long shooting range up to 5 meters, no electricity required, dual high-pressure nozzles.
Model 927
Strong continuous firing, shooting range 3-5 meters, dynamic lighting effects.
Model 917
Large capacity water tank (1000 ml), automatic water suction, compatible with external soda bottles, long-range shooting up to 7-12 meters, dynamic lighting effects.