1. Bluetooth solution: version 4.2
2. Wind/temperature display: support
3. Speaker impedance: 2x5 watts 4 ohms
4. Frequency response: 75Hz-20KHz
5. Battery: 3.7V 4000mAh
6. Charging input: DC 5V 1.0-2.0A
7. Bluetooth transmission distance: greater than or equal to 10M
8. Alarm clock: support dual alarm clocks
9. Fan motor: silent brushless motor
10. TF card: support 32GB(max)
11. Adjustment method: button
12. Clock: 24-hour system
13. Audio input mode: AUX USB TF card, wireless bluetooth