K11 Bluetooth Alarm Clock Speaker Creative Digital Music Clock Display Radio with Dual USB Interface, Support U Disk TF Card FM AUX, US Plug 1. K11 Bluetooth alarm clock subwoofer speaker has Bluetooth, TF card, U disk, AUX audio cable connection to play music. 2. Double alarm function, you can set temporary alarm and long-term alarm. 3. Automatic shutdown function. 4. Support dual USB charging function, can be used for mobile phone, tablet charging, 1A and 2A current. 5. Mirror LED display, adjustable LED bead display screen backlight brightness, can also turn off the display. 6. With time, temperature, function mode display (1224 hours switchable). 7. Large-size LED digital display, CR2032 button battery power-off time memory function. 8. Built-in temperature display sensor, measuring the actual temperature and displaying it on the LED screen, the default is celsius. 9. Input: AC 100-240V, 50-60Hz. 10. Output: DC 5V2A. 11. Power supply method: plug in directly.