The package includes 3 PCS of AAA battery holders and 6 LED light cables.,Characteristics of LED lights: 1. Color temperature: warm white light; 2. Power: 0.2W; 3. Voltage: 3V; 4.Current: 20mA; 5. Bulb diameter: 3 mm; 6. Length of light wire: 11.8 inches,The supply voltage of each AAA battery pack is 3V, which needs 2 PCS of AAA batteries.(NOT included),The battery holder is with cable/cover/switch. Its spring is produced from stainless steel material and oxidation resisting, which is better for battery connection.,The battery holders is made of PP material, which is shockproof and drop-resistant. it is double impact protection for greater safety!,The battery box is compatible with most of LED lights. It is perfect for your dollhouse!