40 Led Christmas Decoration Fairylights With Automatic Timer Function That means that you can Switch Them On For 6 Hours A Day Automatically, Suitable For Indoor & Outdoor Use, Requires 3 Aa Batteries (not Supplied)cascades Of Twinkle Lights For A Beautiful Christmas Decoration In The Home Or Garden 40 Led Lights On A 3.9m Green Cord & 30cm Lead To Battery Packrequires 3 X Aa Bateries (not Supplied)automatic Timer To Switch Lights On For 6 Hours/off For 18 Hours