Surging subwoofer: Customized acoustic large diaphragm + 52mm tweeter subwoofer bass dive excellent, more thick and more texture. Power failure memory function: Built-in high-performance lithium battery, maintain the power outage at the same time to be able to normal timekeeping (but the screen does not display). Snooze Function: When the alarm rings, press the right circular button, the alarm will pause and ring after five minutes. Dual alarm mode: You can set 2 sets of alarms a day, no longer worry about setting alarms frequently. Intelligent sound control function: When the ambient sound up to 90 decibels or gently knock on the desktop where the clock is placed, you can wake up the clock display for 8 seconds and then automatically turn off. Brightness Adjustment: Support 4 levels of brightness adjustment, according to their own habits of appropriate brightness to create a comfortable atmosphere at night. Long Standby Time: Built-in 1200mah rechargeable battery, fully charged about 4 hours, long-lasting, enjoy music anytime, anywhere. Name:Clock Bluetooth Speaker Battery capacity:1200mah Size: 140mmx86mmx84mm Colour:D:Black Material:ABS Package Contents: 1 * Alarm Clock FM Radio 1 * USB Cable 1 * Instructions in Chinese and English Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.