Harman Kardon Onyx Studio 9 Wireless Bluetooth Speaker up to 8 hours of operation Equipped with USB terminal for power suppl

【Voltage Compatibility】 When using electrical appliances, please note that they are designed for Japanese voltage specifications (90-110V), so if you use them with a different voltage, it may cause a malfunction. 【Plug Type】 Our products use Japanese plug types (A or B type). Please use a conversion adapter if necessary. 【Important Note on Transformers and Adapters】 A transformer adjusts voltage to match your device’s requirements. A conversion adapter only changes the plug shape and does not adjust voltage. Using only a conversion adapter without a transformer may result in damage to the product. 【Liability】 We are not responsible for malfunctions or damages caused by improper use, such as operating the product without a transformer. Only new products purchased from authorized retailers have a 1-year manufacturer's warranty and are certified with the Technical Conformity Mark. Frequency band:: 2402MHz ~ 2480MHz Outstanding sound performance with a unique 2-way, 3-channel configuration Equipped with unique acoustic technology Constant Sound Field technology, which allows you to create an immersive experience that envelops the entire room with just one unit. Slim design with a depth of just 13cm, iconic design with a timeless circle motif. The unique automatic sound quality tuning function automatically adjusts the sound according to the room layout and installation location.