Looks really nice, but

... After four hours, the 3 batteries are all.
With batteries the lighting time is even shorter.
After I turned off the light string and the batteries overnight "recover" could. lit it for about 2 hours.
Too Bad.
Have the same light chain with 10 lamps and 2 batteries purchased, it burns much longer.
Addendum of 19:12:12:
Have the lights chain connected to a transformer (3V): SUPER!