K11 LED Bluetooth 4.2 Speaker Alarm Clock Music Display Radio 1. Compact size with full-range speaker, rear bass diaphragm cooperates with sound, and built-in backflow gas produces resonance. 2. Adopts 68 white LED beads and large-screen digital high-definition display. 3. The bottom is brushed to effectively prevent scratches on the surface. 4. Dual USB design, can charge electronic products and insert USB flash drive for music playback at the same time. 5. Wireless Bluetooth 4.2 connection, 10 meters effective distance transmission. 6. Smart dual alarm clock: temporary alarm clockdaily alarm clock 7. Built-in FM radio module, inserting AUX audio cable can enhance the signal, improve the radio effect, and support receiving most FM shortwave. 8. Dimensions: 100x84x62mm 9. Weight: 340g 10. Input voltage: 5V 2A 11. Built-in temperature display sensor, measures actual temperature and displays on LED screen, default is Celsius 12. Power input: AC input 100-240V 50-60Hz, DC output 5V2A transformer