You can contact us on this following methods : Whats App: (+86)15013793590 e-mail: 1713145843@qq will respond u inside 2-4 hours Specification: Number of LEDs: 15M/30LED lights, 30M/60LED lights Light color: RGB IC coloration Connection method: Bluetooth IC model: SM16703P Control mode: APP/buttons Protection level: IP67 Working temperature: -20C~+60C Storage temperature: -40 ℃~+75 ℃ Input voltage of adapter: 100-240VAC Adapter output voltage: 24VDC/2A Rated working voltage: DC24V Rated power: 36W Characteristic1. Multi color function: could be paired with tens of hundreds of thousands of colours and adjustable lighting fixtures in any occasion. 2. Color mode: Multiple color dynamic modes. sixteen million static colors with adjustable brightness+/-. 3. Walkthrough style: Built in various vacation themed decorative patterns 4. Delay on/off function: Set a timer or put off swap to control the on/off of the lights.