Estimated charging time: 3–4 hours Working Hours: approximately 3–4 hours (maximum volume) or 10–11 hours (medium volume) Getting charged DC 5V 2A is the voltage. Features include eight different kinds of light effects, warm light, Bluetooth, TF, AUX, and Bluetooth phone calls. Bluetooth version 5.0 Bluetooth Protocol: A2DP, AVRCP, HSP, and HFP Make contact Techniques: TF card, AUX, and Bluetooth Solution for Bluetooth: BP1048B1 Material: Cloth, Silicon, and ABS Featuring buttons for sound volume Less than 10 meters Power source: integrated lithium battery 3000mAh is the battery's capacity. Dimensions: 201 by 63.5 by 144.6 mm 930g is the net weight.