Portable Speaker, Wireless Smartphone/Tablet Bluetooth Control, Digital Display, Crisp Sound, Phone Call Microphone, Compact, Aluminum Alloy Body, Rechargeable Built-In Battery, Yellow/Chrome Color Wireless  Connects wirelessly to your Bluetooth (and NFC) devices, and has a microphone so you can answer your phone calls. Portable & Sleek  Ultra compact design is ideal to take with you anywhere, in sleek polished aluminum alloy body with digital readout Premium Sound  Clean crisp deep base sound thanks to bass enhancement resonator technology and powerful 52mm 3W 4 Ohm speaker Digital Display  Digital LED readout for volume indicator, device connection indicator, battery indicator, and clock! Long Lasting Battery  Built-in Lithium Ion 500mah battery offers hours of playtime and is quickly recharged