Time to unwind and soothe yourself with this versatile color changing aux speaker. It has a preloaded calming sound already. Great for use with meditation apps. Rechargable 3.7 V Li-ion battery. USB interface. You are getting a brand new aux speaker with built in rechargeable battery and color changing capabilities. Specs: Driver Diameter: 52 mm Impedance: 4 Ohms Output power: 3 watts Power supply: Li-ion Battery 3.7V 300 mAh Playing time for music: 1 - 2 hours Playing time for preloaded song: 2.5 to 3.5 hours Charging time: 1 - 2 hours 3.5 mm aux cable included Micro USB cable included. Shipping is only to the lower 48 states, USA. But? If you are outside the USA you may purchase if your country participates in's Global Shipping Program. Bid with confidence; we are Experienced sellers for over 23 years. Ships from Washington, DC. Tracking included in ALL orders. NO local pick-up option. Preguntas? Adelante! Hablamos Español. (KA055)