– Made of 0.42 thick copper wire, does not overheat and remains cool after long hours of usage. So it’s really safe for your indoor decorative lights string. – Synchronize with music and microphone: the beating speed of the light string changes according to the music rhythm – Timer setting: random timing function to get rid of the traditional fixed timing – USB charging: 5V USB interface is OK, which is convenient. Charging treasure, mobile phone chargers, and computers can all be used – App control: first, install the app on the mobile phone, download the app “led lamp” and match it with Bluetooth. No remote control is required – Brightness and speed: the brightness can be adjusted within 12m through the application program. The brightness can be adjusted and the speed can be adjusted – Millions colors: more than 16 million colors can be changed, and 7 scene modes and 29 dynamic modes are provided – One more app lamp: control less than 10 groups of lamps at the same time to keep working in the same color – Memory function: even if Bluetooth is not connected, the memory function can still work, and the timer setting also has a memory function – Model 1: in the user-defined mode, there are 4 operation modes to choose from (jump, breath, flash, gradient) – Model? 2: in normal mode, static mode (7 colors), three color jump (7 colors), seven color jump, three-color gradient (7 colors), seven color gradient, monochrome gradient (7 colors), monochrome flash mode (7 colors), two-color gradients