Elegant DesignSleek and elegant aluminum design is aesthetically pleasing yet durable.Classic black, stylish gold, elegant silver and fashionable rose red, provide many choice.Perfect CompatibilityThe latest Bluetooth V4.0 technology, compatible with most Bluetooth-enabled devicesUncompromised PortabilityThe compact 500mAh lithium ion battery makes this a very portable speaker yet does not sacrifice performance.Ideal for more occasionsWhether you're partying, working out, or just lounging around the house, enjoy a full-range stereo sound with impressive volumeTechnical Specifications:Brand: KunodiCharging: MicroUSBUses: Portable Audio Player, Mobile Phone, ComputerSpeaker Type: Surround Sound AudioSpeaker Power: 3W Sensitivity: 500 mV Distortion: 0.1% Audio Materials: Aluminum housingSpecial Features: Wireless and Portable Speaker, TF card mode, Speakerphone mode Transmission distance: about 33 feetBattery Capacity: 3.7V 500mAhPackage includes: 1 x Bluetooth speaker 1 x Charging Cable 1 x User ManualGuaranteed Reliability-3 months -Any question, please feel free to contact us and we will give you a 5-star customer serviceNoteThe speaker will under Bluetooth mode automatically when turn on, please press the power key to change the TF and AUX mode(Bluetooth/TF/AUX)