Airgoo&reg; Led Colored Christmas Tree Lights Smartphone Control with 33ft 100pcs Warm White String and 25pcs C7 for Indoor Christmas Tree Ornament - APP Control, Bluetooth Connect It's not like tranditional Christmas lights,it is a smart lights,combined changing lights and music play together,not only including 33ft 100pcs warm white string wire and 25ft 25pcs C7 Bulbs also have a golden speaker,The biggest feature is the lights kit controlled just by a smartphone(Support Ios and Andirod Device) HOW TO USE - Free Download the app from Google play and Apple store,Called:musical christmas lights,open the lights and your phone bluetooth find "JUKEBOX-SPK" and connect it,finally open the APP,then you can play fun with the smart christmas tree lights Some funny effects:ex:1)built-in dozen christmas song;2)Play your own music list are avaliable;3)The lights change follow the rhythm of music;3)slide your phone screen can create any lighting color;4)Remote control within 60ft;5)Built-in lighting effect like shooting star,blinking etc APP instruction:Four functions totally,including1)Color wheel;2)Music effect;3)Sound effect,4)Lighting cycle (Recommended watch tested vedio) GURANTEE - Airgoo-Tech offer 100% Gurantee,When the item have problem, you can return or apply for a refund