Specifications:1. Type of Bulb: LED2. Base Type: E273. Voltage: AC86-265V 50/60HZ4. CRI:> 805. Viewing angle: 170°6. Wireless receiving range: 50 Meters7. Operating temperature: -40 ℃ -85 ℃8. Color temperature range: 2700K-6500K9. Maximum total luminous flux: 550 Lumens10. Bluetooth chip: American TI CC2541 (4.0)11. RGBW lamp beads: RGB 4*5050 lamp beads， 1.5W/bead (6W); Warm/Cold White 10*2835 lampSteps to Enjoy the Color:1. Scan the QR Code on package (Or search "Mi Light" in APP Store or Google Play)， install the free APP.2. Screw in the LED bulb into the lamp holder and turn on it.3. Activate the Bluetooth of your smartphone and use the app to search the LED bulb.(It will be connected automatically) Now you can enjoy the 16 milions color with your smartphone or tablet. Include:1 * Bluetooth LED Bulb.