Features: 1. This very bright LED string light is operated by 3 x AA batteries which are not included in the package. 2. The small battery case is approx 17mm x 47mm x 75mm and can be easily hidden in any lighting display. 3. The lights can work constantly in Steady ON mode or Flash mode and there is an ON/STEADY/FLASH/OFF switch on the battery case. 4. This string light is suitable for both indoor and outdoor use, but this light is not fully waterproof, to maintain it"s life span, please keep it from rain and dampness when you use it outdoor. 5. Great for decorating anywhere and are cool to touch so you can decorate clothing, costumes, plants, flower arrangements etc. Use at Weddings, Christmas, Parties, BBQ"s, etc. 6. Two Function modes: steady on and twinkling. Specifications: 1. Total LED lamps quantity: 40 2. Main cable length: 13ft/4m 3. Approx. 46.5cm from battery case to the 1st butterfly lamp bead 4. Approx. 11cm from one butterfly lamp bead to the next one 5. Power source: 3 x AA battery (not included) 6. Power: 6W 7. Light Color: White 8. Cable Color: Tansparent 9. Styled: Butterfly 10. Two Function modes: steady & twinkling.Transferring the function mode by the ON/STEADY/FLASH/OFF button on the battery case Note: This is not a fully waterproof one, to maintain the long life span, you shall keep it from rain or damp environment. Package Includes: 1x Innoo Tech Battery operated butterfly styled 4M 40 LED Fairy Decorative string light White