Product Description Bluetooth Speaker This device can be connected with your phone and tablet via Bluetooth. You can use this cool wireless speaker to play music, or even answer the phone. Touch Control You can touch the metal panel to switch between different light modes. Warm white mode: micro/medium/high/SOS emergency signal (change by short touch) Multi-color mode: orange red, dark blue, green, pink, light blue, color breathing light, music rhythm light (change by short touch) Note: long touch to change between the warm white and color lighting. Rechargeable Thanks to the built-in rechargeable 18650 battery (2200mAh) you can charge the device with an USB cable. Charge time: 4 hrs. Discharge time: 10 hrs. (high brightness), 12 hrs. (low brightness), 10 hrs. (music play), 5 hrs. (using light and music play at the same time) Memory Card Play Apart from playing the audio on your Bluetooth device, you can also insert the TF/Micro SD card to let the speaker play the music (MP3/WMA/APE format) saved in your card. Various Applications Itâ€™s convenient to carry with its portable hook design, and great for travelling. Also, you can use it as desk lamp, emergency signal light, night lamp, story teller for kidsâ€™ bedtime company, and so on.