As for the operation 3x AA batteries are required and these are not included, we recommend these mitzubestellen equal.

Technical specifications
Christmas lights

Line: Heartline Indoor
Type: decorative light string
Thread color: Silver
Publication: 20 transparent and illuminated heart cable

Cable: 0.50m
Lamp distance: 10cm
Lamp length: 2.2m
Overall Length: 2.2m
Cable Color: Transparent
Cable History: strand
Flow Control: Single-Wire (A-strand)
lighting

Lamp-Number: 20
Lamp Type: LED
Light Colour: Warm White
Lamp replaceable: No
Features / Application

Batteries: 3x AA - not included
Application of space: indoor
Timer: Yes
Dimmer: No
Function controller: No